Ulta Lab Tests

Fatigue, Low Energy & Brain Fog - Essential Lab Panel

A focused fatigue blood test panel for people experiencing low energy, brain fog, or feeling tired all the time. This Essential panel checks key biomarkers related to thyroid screening, iron stores, vitamin B12, vitamin D, blood sugar, liver function, kidney function, and overall wellness. It is a practical starting point for identifying common lab patterns that may be linked to fatigue and low stamina.

Blood, Serum
Phlebotomist
Fatigue Panel, Low Energy Panel, Brain Fog Panel, Tired All the Time Panel, Energy and Wellness Panel, Chronic Fatigue Screening Panel, Low Stamina Panel, Fatigue and Nutrient Deficiency Panel, Fatigue and Thyroid Panel

The following is a list of what is included in the item above. Click the test(s) below to view what biomarkers are measured along with an explanation of what the biomarker is measuring.

Also known as: CBC, CBC includes Differential and Platelets, CBC/PLT w/DIFF, Complete Blood Count (includes Differential and Platelets)

NOTE: Ulta Lab Tests provides CBC test results from Quest Diagnostics as they are reported. Often, different biomarker results are made available at different time intervals. When reporting the results, Ulta Lab Tests denotes those biomarkers not yet reported as 'pending' for every biomarker the test might report. Only biomarkers Quest Diagnostics observes are incorporated and represented in the final CBC test results provided by Ulta Lab Tests.

Absolute Band Neutrophils (Only Reported If Detected)

Immature forms of neutrophils are called neutrophilic band cells. Neutrophils are a type of white blood cell that is responsible for much of the body's protection against infection. Neutrophils are produced in the bone marrow and released into the bloodstream to travel to wherever they are needed. Large numbers of immature forms of neutrophils, called neutrophilic band cells, are produced by the bone marrow when the demand is high.

Absolute Basophils

Basophils normally constitute 1% or less of the total white blood cell count but may increase or decrease in certain diseases and are thought to be involved in allergic reactions.

Absolute Blasts (Only Reported If Detected)

Blasts are immature forms of white blood cells.

Absolute Eosinophils

Eosinophils (eos) respond to infections caused by parasites and play a role in allergic reactions (hypersensitivities)

Absolute Lymphocytes

Lymphocytes are white blood cells that exist in both the blood and the lymphatic system. They are divided into three types. The B lymphocytes (B cells) are antibody-producing cells that are essential for acquired, antigen-specific immune responses. The second type are T lymphocytes (T cells) some T cells help the body distinguish between "self" and "non-self" antigens while others initiate and control the extent of an immune response, boosting it as needed and then slowing it as the condition resolves. Other types of T cells directly attack and neutralize virus-infected or cancerous cells. The third type are natural killer cells (NK cells) that directly attack and kill abnormal cells such as cancer cells or those infected with a virus.

Absolute Metamyelocytes (Only Reported If Detected)

Metamyelocytes are immature forms of white blood cells.

Absolute Monocytes

Monocytes (mono), similar to neutrophils, move to an area of infection and engulf and destroy bacteria. They are associated more often with chronic rather than acute infections. They are also involved in tissue repair and other functions involving the immune system.

Absolute Myelocytes (Only Reported If Detected)

Myelocytes are immature forms of white blood cells.

Absolute Neutrophils

Neutrophils (neu) normally make up the largest number of circulating WBCs. They move into an area of damaged or infected tissue, where they engulf and destroy bacteria or sometimes fungi. Young neutrophils, recently released into circulation, are called bands.

Absolute Nucleated Rbc (Only Reported If Detected)

Nucleated Red Blood Cells (nRBC) ) the presence of NRBCs in the adult blood is usually associated with malignant neoplasms, bone marrow diseases, and other serious disorders.

Absolute Promyelocytes (Only Reported If Detected)

Promyelocytes are immature forms of white blood cells.

Band Neutrophils (Only Reported If Detected)

Immature forms of neutrophils are called neutrophilic band cells. Neutrophils are a type of white blood cell that is responsible for much of the body's protection against infection. Neutrophils are produced in the bone marrow and released into the bloodstream to travel to wherever they are needed. Large numbers of immature forms of neutrophils, called neutrophilic band cells, are produced by the bone marrow when the demand is high.

Basophils

Basophils normally constitute 1% or less of the total white blood cell count but may increase or decrease in certain diseases and are thought to be involved in allergic reactions.

Blasts (Only Reported If Detected)

Blasts are immature forms of white blood cells.

Eosinophils

Eosinophils are specialized white blood cells produced in the bone marrow and released into the bloodstream, where they normally make up only 0–6 % of circulating leukocytes. Their cytoplasm is packed with reddish‑orange granules that contain potent enzymes (e.g., major basic protein, eosinophil cationic protein) and inflammatory mediators. When the immune system detects large, multicellular invaders—such as helminth (worm) parasites—eosinophils migrate out of the blood and surround the pathogen, releasing these granule contents to damage the parasite’s outer surface and aid its destruction. Beyond parasite defense, eosinophils act as key orchestras of the allergic response. They accumulate in tissues exposed to allergens (airways in asthma, skin in eczema, GI tract in eosinophilic esophagitis) and secrete cytokines and lipid mediators that amplify inflammation, recruit additional immune cells, and contribute to symptoms like swelling, mucus production, and itching. Because of this pro‑inflammatory role, persistently elevated eosinophil counts—termed eosinophilia—can signal allergic disorders, drug hypersensitivity, or certain autoimmune and malignant conditions. Conversely, counts drop toward zero after glucocorticoid therapy or in acute stress states, reflecting the cells’ sensitivity to hormonal and immune regulation.

Hematocrit

Hematocrit is a blood test that measures the percentage of the volume of whole blood that is made up of red blood cells. This measurement depends on the number of red blood cells and the size of red blood cells.

Hemoglobin

Serum hemoglobin is a blood test that measures the level of free hemoglobin in the liquid part of the blood (the serum). Free hemoglobin is the hemoglobin outside of the red blood cells. Most of the hemoglobin is found inside the red blood cells, not in the serum.

Lymphocytes

Lymphocytes are white blood cells that exist in both the blood and the lymphatic system. They are divided into three types. The B lymphocytes (B cells) are antibody-producing cells that are essential for acquired, antigen-specific immune responses. The second type are T lymphocytes (T cells) some T cells help the body distinguish between "self" and "non-self" antigens while others initiate and control the extent of an immune response, boosting it as needed and then slowing it as the condition resolves. Other types of T cells directly attack and neutralize virus-infected or cancerous cells. The third type are natural killer cells (NK cells) that directly attack and kill abnormal cells such as cancer cells or those infected with a virus.

MCH

Mean corpuscular hemoglobin (MCH) is a calculation of the average amount of oxygen-carrying hemoglobin inside a red blood cell.

MCHC

Mean corpuscular hemoglobin concentration (MCHC) is a calculation of the average percentage of hemoglobin inside a red cell.

MCV

Mean corpuscular volume (MCV) is a measurement of the average size of RBCs.

Metamyelocytes (Only Reported If Detected)

Metamyelocytes are immature forms of white blood cells.

Monocytes

Monocytes (mono), similar to neutrophils, move to an area of infection and engulf and destroy bacteria. They are associated more often with chronic rather than acute infections. They are also involved in tissue repair and other functions involving the immune system.

MPV

Mean Platelet Volume (MPV) - When it indicates average size of platelets are small; older platelets are generally smaller than younger ones and a low MPV may mean that a condition is affecting the production of platelets by the bone marrow. When it indicates a high number of larger, younger platelets in the blood; this may be due to the bone marrow producing and releasing platelets rapidly into circulation.

Myelocytes (Only Reported If Detected)

Myelocytes are immature forms of white blood cells.

Neutrophils

Neutrophils are a type of white blood cell that is responsible for much of the body's protection against infection. Neutrophils are produced in the bone marrow and released into the bloodstream to travel to wherever they are needed.

Nucleated Rbc (Only Reported If Detected)

Nucleated Red Blood Cells (nRBC) ) the presence of NRBCs in the adult blood is usually associated with malignant neoplasms, bone marrow diseases, and other serious disorders.

Platelet Count

A platelet count is a test to measure how many platelets you have in your blood. Platelets help the blood clot. They are smaller than red or white blood cells.

Promyelocytes (Only Reported If Detected)

Promyelocytes are immature forms of white blood cells.

RDW

Red cell distribution width (RDW), which may be included in a CBC, is a calculation of the variation in the size of RBCs.

Reactive Lymphocytes (Only Reported If Detected)

Lymphocytes are white blood cells that exist in both the blood and the lymphatic system. They are divided into three types. The B lymphocytes (B cells) are antibody-producing cells that are essential for acquired, antigen-specific immune responses. The second type are T lymphocytes (T cells) some T cells help the body distinguish between "self" and "non-self" antigens while others initiate and control the extent of an immune response, boosting it as needed and then slowing it as the condition resolves. Other types of T cells directly attack and neutralize virus-infected or cancerous cells. The third type are natural killer cells (NK cells) that directly attack and kill abnormal cells such as cancer cells or those infected with a virus.

Red Blood Cell Count

An RBC count is a blood test that tells how many red blood cells (RBCs) you have. RBCs contain hemoglobin, which carries oxygen. How much oxygen your body tissues get depends on how many RBCs you have and how well they work.

White Blood Cell Count

A WBC count is a test to measure the number of white blood cells (WBCs) in the blood. WBCs help fight infections. They are also called leukocytes. There are five major types of white blood cells: basophils, eosinophils, lymphocytes (T cells and B cells), monocytes and neutrophils

Also known as: Chem 12, Chemistry Panel, Chemistry Screen, CMP, Complete Metabolic Panel, Comprehensive Metabolic Panel CMP, SMA 12, SMA 20

Albumin

Albumin is a protein made by the liver. A serum albumin test measures the amount of this protein in the clear liquid portion of the blood.

Albumin/Globulin Ratio

The ratio of albumin to globulin (A/G ratio) is calculated from measured albumin and calculated globulin (total protein - albumin). Normally, there is a little more albumin than globulins, giving a normal A/G ratio of slightly over 1. Because disease states affect the relative amounts of albumin and globulin, the A/G ratio may provide a clue as to the cause of the change in protein levels. A low A/G ratio may reflect overproduction of globulins, such as seen in multiple myeloma or autoimmune diseases, or underproduction of albumin, such as may occur with cirrhosis, or selective loss of albumin from the circulation, as may occur with kidney disease (nephrotic syndrome). A high A/G ratio suggests underproduction of immunoglobulins as may be seen in some genetic deficiencies and in some leukemias. More specific tests, such as liver enzyme tests and serum protein electrophoresis, must be performed to make an accurate diagnosis. With a low total protein that is due to plasma expansion (dilution of the blood), the A/G ratio will typically be normal because both albumin and globulin will be diluted to the same extent.

Alkaline Phosphatase

Alkaline phosphatase (ALP) is a protein found in all body tissues. Tissues with higher amounts of ALP include the liver, bile ducts, and bone.

Alt

Alanine transaminase (ALT) is an enzyme found in the highest amounts in the liver. Injury to the liver results in release of the substance into the blood.

AST

AST (aspartate aminotransferase) is an enzyme found in high amounts in liver, heart, and muscle cells. It is also found in lesser amounts in other tissues.

Bilirubin, Total

Bilirubin is a yellowish pigment found in bile, a fluid made by the liver. A small amount of older red blood cells are replaced by new blood cells every day. Bilirubin is left after these older blood cells are removed. The liver helps break down bilirubin so that it can be removed from the body in the stool.

Bun/Creatinine Ratio

A ratio between a person’s BUN and blood creatinine to help determine what is causing these concentrations to be higher than normal. The ratio of BUN to creatinine is usually between 10:1 and 20:1. An increased ratio may be due to a condition that causes a decrease in the flow of blood to the kidneys, such as congestive heart failure or dehydration. It may also be seen with increased protein, from gastrointestinal bleeding, or increased protein in the diet. The ratio may be decreased with liver disease (due to decrease in the formation of urea) and malnutrition.

Calcium

You have more calcium in your body than any other mineral. Calcium has many important jobs. The body stores more than 99 percent of its calcium in the bones and teeth to help make and keep them strong. The rest is throughout the body in blood, muscle and the fluid between cells. Your body needs calcium to help muscles and blood vessels contract and expand, to secrete hormones and enzymes and to send messages through the nervous system.

Carbon Dioxide

CO2 is carbon dioxide. Measures the amount of carbon dioxide in the liquid part of your blood, called the serum. In the body, most of the CO2 is in the form of a substance called bicarbonate (HCO3-). Therefore, the CO2 blood test is really a measure of your blood bicarbonate level.

Chloride

Chloride is a type of electrolyte. It works with other electrolytes such as potassium, sodium, and carbon dioxide (CO2). These substances help keep the proper balance of body fluids and maintain the body's acid-base balance. This is a measure of the amount of chloride in the fluid portion (serum) of the blood.

Creatinine

The creatinine blood test measures the level of creatinine in the blood. This test is done to see how well your kidneys work.

Egfr African American

Glomerular filtration rate (GFR) is a test used to check how well the kidneys are working. Specifically, it estimates how much blood passes through the glomeruli each minute. Glomeruli are the tiny filters in the kidneys that filter waste from the blood.

Egfr Non-Afr. American

Glomerular filtration rate (GFR) is a test used to check how well the kidneys are working. Specifically, it estimates how much blood passes through the glomeruli each minute. Glomeruli are the tiny filters in the kidneys that filter waste from the blood.

GFR-AFRICAN AMERICAN

GFR-NON AFRICAN AMERICAN

Globulin

Globulins is the collective term for most blood proteins other than albumin. Identifying the types of globulins can help diagnose certain disorders. Globulins are roughly divided into three groups: alpha, beta, and gamma globulins. Gamma globulines include various types of antibodies such as immunoglobulins (Ig) M, G, and A.

Glucose

A blood glucose test measures the amount of a sugar called glucose in a sample of your blood. Glucose is a major source of energy for most cells of the body, including those in the brain. The hormones insulin and glucagon help control blood glucose levels.

Potassium

Potassium is a mineral that the body needs to work normally. It helps nerves and muscles communicate. It also helps move nutrients into cells and waste products out of cells. A diet rich in potassium helps to offset some of sodium's harmful effects on blood pressure.

Protein, Total

The total protein is the total amount of two classes of proteins, albumin and globulin that are found in the fluid portion of your blood. Proteins are important parts of all cells and tissues. Your albumin helps prevent fluid from leaking out of blood vessels and your globulins are an important part of your immune system.

Sodium

Sodium is a substance that the body needs to work properly it is vital to normal body processes, including nerve and muscle function

Urea Nitrogen (Bun)

BUN stands for blood urea nitrogen. Urea nitrogen is what forms when protein breaks down. BUN measures the amount of urea nitrogen in the blood.

Ferritin

Ferritin is a protein found inside cells that stores iron so your body can use it later. A ferritin test indirectly measures the amount of iron in your blood. The amount of ferritin in your blood (serum ferritin level) is directly related to the amount of iron stored in your body.

Also known as: A1c, Glycated Hemoglobin, Glycohemoglobin, Glycosylated Hemoglobin, HA1c, HbA1c, Hemoglobin A1c, Hemoglobin A1c HgbA1C, Hgb A1c

HEMOGLOBIN A1C

The A1c test evaluates the average amount of glucose in the blood over the last 2 to 3 months. It does this by measuring the concentration of glycated (also often called glycosylated) hemoglobin A1c. Hemoglobin is an oxygen-transporting protein found inside red blood cells (RBCs). There are several types of normal hemoglobin, but the predominant form – about 95-98% – is hemoglobin A. As glucose circulates in the blood, some of it spontaneously binds to hemoglobin A. The hemoglobin molecules with attached glucose are called glycated hemoglobin. The higher the concentration of glucose in the blood, the more glycated hemoglobin is formed. Once the glucose binds to the hemoglobin, it remains there for the life of the red blood cell – normally about 120 days. The predominant form of glycated hemoglobin is referred to as HbA1c or A1c. A1c is produced on a daily basis and slowly cleared from the blood as older RBCs die and younger RBCs (with non-glycated hemoglobin) take their place. This test is used to monitor treatment in someone who has been diagnosed with diabetes. It helps to evaluate how well their glucose levels have been controlled by treatment over time. This test may be used to screen for and diagnose diabetes or risk of developing diabetes. In 2010, clinical practice guidelines from the American Diabetes Association (ADA) stated that A1c may be added to fasting plasma glucose (FPG) and oral glucose tolerance test (OGTT) as an option for diabetes screening and diagnosis. For monitoring purposes, an A1c of less than 7% indicates good glucose control and a lower risk of diabetic complications for the majority of diabetics. However, in 2012, the ADA and the European Association for the Study of Diabetes (EASD) issued a position statement recommending that the management of glucose control in type 2 diabetes be more "patient-centered." Data from recent studies have shown that low blood sugar (hypoglycemia) can cause complications and that people with risk of severe hypoglycemia, underlying health conditions, complications, and a limited life expectancy do not necessarily benefit from having a stringent goal of less than 7% for their A1c. The statement recommends that people work closely with their doctor to select a goal that reflects each person's individual health status and that balances risks and benefits.

Vitamin D, 25-Oh, D2

Vitamin D2 ((ergocalciferol,) is found in fortified foods and in most vitamin preparations and supplements. Vitamin D comes from two sources: endogenous, which is produced in the skin on exposure to sunlight, and exogenous, which is ingested in foods and supplements. The D2 form is found in fortified foods and in most vitamin preparations and supplements. Vitamin D2 is effective when it is converted by the liver and the kidney into the active form, 1,25-dihydroxyvitamin D.

Vitamin D, 25-Oh, D3

Vitamin D3 (cholecalcifero) which comes from animals. Vitamin D comes from two sources: endogenous, which is produced in the skin on exposure to sunlight, and exogenous, which is ingested in foods and supplements. Vitamin D3 is the form produced in the body and is also used in some supplements. Vitamin D3 are is converted by the liver and the kidney into the active form, 1,25-dihydroxyvitamin D.

Vitamin D, 25-Oh, Total

Vitamin D comes from two sources: endogenous, which is produced in the skin on exposure to sunlight, and exogenous, which is ingested in foods and supplements. The chemical structures of the types of vitamin D are slightly different, and they are named vitamin D2 (ergocalciferol, which comes from plants) and vitamin D3 (cholecalciferol, which comes from animals). The D2 form is found in fortified foods and in most vitamin preparations and supplements. Vitamin D3 is the form produced in the body and is also used in some supplements. Vitamin D2 and D3 are equally effective when they are converted by the liver and the kidney into the active form, 1,25-dihydroxyvitamin D.

Also known as: Thyroid Stimulating Hormone Test, Thyrotropin Test

TSH

A TSH test is a lab test that measures the amount of thyroid stimulating hormone (TSH) in your blood. TSH is produced by the pituitary gland. It tells the thyroid gland to make and release thyroid hormones into the blood.

Also known as: B12, B12 Vitamin, Cobalamin, Cyanocobalamin, Vitamin B12 Cobalamin

Vitamin B12

Vitamin B12 is part of the B complex of vitamins and measurea the levels of vitamin B12 in the liquid portion of the blood, the serum or plasma, to detect deficiencies. Cobalamine, or vitamin B12, is found in animal products such as red meat, fish, poultry, milk, yogurt, and eggs and is not produced in the human body. In recent years, fortified cereals, breads, and other grain products have also become important dietary sources of B12. Vitamin B12 is necessary for normal RBC formation, tissue and cellular repair, and DNA synthesis. B12 is important for nerve health. A deficiency in B12 can lead to macrocytic anemia. Megaloblastic anemia, a type of macrocytic anemia, is characterized by the production of fewer but larger RBCs called macrocytes, in addition to some cellular changes in the bone marrow. B12 deficiency can lead to varying degrees of neuropathy, nerve damage that can cause tingling and numbness in the affected person's hands and feet.
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The Fatigue, Low Energy & Brain Fog - Essential Lab Panel panel contains 7 tests with 61 biomarkers .

Overview

The Fatigue, Low Energy & Brain Fog Essential Lab Panel is designed for people who want a focused starting point to evaluate common lab markers that may be related to feeling tired, low on energy, mentally foggy, or run down.

Fatigue and brain fog can be connected to several areas of health, including blood count, thyroid function, blood sugar balance, iron storage, vitamin status, liver function, kidney function, and overall metabolic wellness. This panel brings together key baseline tests that can help identify patterns worth reviewing with a healthcare provider.

This panel is a good starting option for individuals who want essential lab insight without ordering a more expanded panel.

Why Order This Panel?

Fatigue, low energy, and brain fog can be frustrating because they may be connected to many different systems in the body. This panel helps evaluate key biomarkers related to blood health, thyroid screening, blood sugar, iron storage, vitamin D, vitamin B12, liver function, kidney function, and metabolic wellness.

This panel may help you and your healthcare provider identify common lab patterns that could help explain why you feel tired, unfocused, or run down.

This Panel May Be Helpful For People Experiencing

  • Feeling tired even after sleep
  • Low energy during the day
  • Brain fog or trouble concentrating
  • Feeling weak, depleted, or run down
  • Low stamina
  • Poor focus
  • Afternoon tiredness
  • Concern about low vitamin levels
  • Concern about iron, B12, vitamin D, thyroid, or blood sugar
  • A desire to establish a baseline for overall wellness

Common Symptoms This Panel May Help Evaluate

This panel may be helpful for people experiencing:

  • Fatigue or low energy
  • Brain fog or poor focus
  • Feeling tired after a full night of sleep
  • Afternoon energy crashes
  • Weakness or low stamina
  • Feeling run down or depleted
  • Dizziness or lightheadedness
  • Low motivation
  • General wellness concerns
  • Concern about vitamin or nutrient deficiency

What This Panel Helps Evaluate

This panel helps evaluate selected biomarkers related to:

  • Blood cell health
  • Anemia-related patterns
  • Iron storage
  • Vitamin B12 status
  • Vitamin D status
  • Thyroid screening
  • Blood sugar patterns
  • Liver function
  • Kidney function
  • Electrolyte balance
  • General metabolic health

What Makes This Essential Panel Different?

The Essential panel is a focused starting point for people who want to check common lab markers related to fatigue, low energy, and brain fog. It includes foundational tests often used to review blood count, metabolic health, thyroid screening, blood sugar, vitamin D, vitamin B12, and iron storage.

This option is best for someone who wants a practical first step before choosing a more expanded fatigue, thyroid, hormone, inflammation, or nutrient panel.

Which Tier Is Right for Me?

Choose This Tier Best For
Essential A focused starting point for fatigue, low energy, brain fog, thyroid screening, blood sugar, vitamin D, B12, and iron storage
Advanced A deeper review that adds thyroid hormones, inflammation, insulin, magnesium, lipids, iron/TIBC, and folate
Comprehensive The most complete option, adding thyroid antibodies, autoimmune screening, cortisol, DHEA-S, sex hormones, CK, homocysteine, CoQ10, ESR, and urinalysis

Tests Included and Why They Matter

CBC, includes Differential and Platelets

The CBC, or complete blood count, evaluates red blood cells, white blood cells, hemoglobin, hematocrit, platelets, and different types of white blood cells. This test is included because abnormal blood cell patterns may be associated with anemia, infection, inflammation, immune changes, or other issues that may contribute to fatigue, weakness, or feeling unwell.

Comprehensive Metabolic Panel, CMP

The CMP evaluates several important markers related to liver function, kidney function, electrolytes, protein levels, calcium, and blood glucose. This test is included because low energy and brain fog can sometimes be connected to blood sugar changes, electrolyte imbalance, dehydration, liver enzyme changes, kidney function changes, or abnormal protein levels.

Ferritin

Ferritin measures stored iron in the body. This test is included because low iron stores may contribute to fatigue, weakness, poor exercise tolerance, dizziness, shortness of breath with activity, or hair shedding. Ferritin can be helpful even when hemoglobin is still within the normal range.

Hemoglobin A1c

Hemoglobin A1c measures average blood sugar levels over approximately the past two to three months. This test is included because blood sugar imbalance, prediabetes, diabetes, or frequent glucose swings may contribute to fatigue, low energy, brain fog, and energy crashes.

QuestAssureD™ 25-Hydroxyvitamin D, D2, D3, LC/MS/MS

Vitamin D testing measures the body’s vitamin D status. This test is included because low vitamin D is common and may be associated with fatigue, muscle aches, low mood, immune concerns, bone health issues, and general wellness concerns. The QuestAssureD™ method provides detailed vitamin D measurement, including D2 and D3.

TSH

TSH, or thyroid-stimulating hormone, is commonly used as a first-line thyroid screening test. This test is included because thyroid imbalance may contribute to fatigue, brain fog, weight changes, cold intolerance, constipation, low mood, hair thinning, and changes in heart rate or energy level.

Vitamin B12, Cobalamin

Vitamin B12 is important for red blood cell formation, nerve function, brain health, and energy metabolism. This test is included because low B12 may contribute to fatigue, brain fog, numbness or tingling, weakness, mood changes, and memory or concentration concerns.

Related Biomarker Patterns This Panel May Help Identify

This panel may help identify or rule out lab patterns related to:

  • Anemia or abnormal blood count patterns
  • Low iron stores
  • Low vitamin B12
  • Low vitamin D
  • Thyroid screening abnormalities
  • Blood sugar imbalance
  • Liver or kidney function changes
  • Electrolyte imbalance
  • General metabolic changes

How to Prepare for This Panel

Preparation may vary depending on the specific tests included and the instructions provided at checkout. In general:

  • Fasting may be recommended because this panel includes glucose-related testing.
  • Drink water before your blood draw unless instructed otherwise.
  • Continue medications unless your healthcare provider tells you otherwise.
  • Bring or keep a list of medications and supplements to discuss during your physician consultation.
  • Follow all lab collection instructions provided with your order.

What Happens After You Receive Your Results?

After your lab results are available, your report can help organize your biomarkers into easy-to-understand patterns. Your results may highlight areas to review with a licensed healthcare provider, such as thyroid screening, iron storage, vitamin B12, vitamin D, blood sugar, liver function, kidney function, or blood count patterns.

During the physician consultation, you can discuss what your results may mean, whether follow-up testing is appropriate, and what next steps may be useful based on your symptoms and health history.

Related Lab Panels

Customers interested in this panel may also consider:

  • Fatigue, Low Energy & Brain Fog Advanced Lab Panel
  • Thyroid & Metabolism Lab Panel
  • Vitamin, Mineral & Nutrient Deficiency Lab Panel
  • Stress, Cortisol, Sleep & Burnout Lab Panel
  • Prediabetes & Insulin Resistance Lab Panel

Frequently Asked Questions

What is the Fatigue, Low Energy & Brain Fog Essential Lab Panel?

The Fatigue, Low Energy & Brain Fog Essential Lab Panel is a focused blood test panel that checks key biomarkers related to blood health, thyroid screening, blood sugar, iron storage, vitamin D, vitamin B12, liver function, kidney function, and general metabolic wellness.

What blood tests are commonly ordered for fatigue?

Blood tests commonly used to evaluate fatigue may include CBC, CMP, TSH, ferritin, vitamin B12, vitamin D, Hemoglobin A1c, iron studies, inflammatory markers, and selected thyroid or hormone tests.

Can this panel diagnose the cause of fatigue?

No. This panel does not diagnose the cause of fatigue. It helps identify lab patterns that may be useful to review with a healthcare provider.

Is this a good first panel for fatigue?

Yes. This is a practical starting point for people who want to check common markers related to tiredness, low energy, and brain fog.

Can low vitamin D cause fatigue?

Low vitamin D may be associated with fatigue, muscle aches, low mood, immune concerns, and bone health issues. Vitamin D testing can help determine whether your level is low, normal, or elevated.

Can low B12 cause brain fog?

Low vitamin B12 may contribute to fatigue, brain fog, numbness or tingling, weakness, mood changes, and memory or concentration concerns.

Can thyroid problems cause fatigue and brain fog?

Thyroid imbalance may contribute to fatigue, brain fog, weight changes, cold intolerance, constipation, hair thinning, low mood, and changes in heart rate or energy.

Why is ferritin included in a fatigue panel?

Ferritin measures stored iron. Low ferritin may contribute to fatigue, weakness, low stamina, dizziness, hair shedding, and reduced exercise tolerance.

Should I choose Essential, Advanced, or Comprehensive?

Choose Essential for a focused starting point, Advanced for a deeper fatigue and metabolism review, and Comprehensive for the broadest evaluation of fatigue-related biomarkers.

Important Note

This lab panel is designed to help evaluate selected biomarkers that may be related to fatigue, low energy, brain fog, and general wellness. It is not intended to diagnose, treat, cure, or prevent any disease. Results should be reviewed with a licensed healthcare provider, especially if symptoms are severe, persistent, new, or worsening.

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