Fatigue Basic 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: Dehydroepiandrosterone Sulfate, DHEA SO4, DHEA Sulfate Immunoassay, DHEAS, Transdehydroandrosterone


DHEA-sulfate test measures the amount of DHEA-sulfate in the blood. DHEA-sulfate is a weak male hormone (androgen) produced by the adrenal gland in both men and women.

Also known as: Estrogen Total Serum

Estrogen, Total, Serum

Estrogen is a group of steroids that regulate the menstrual cycle and function as the main female sex hormones. Estrogens are responsible for the development of female sex organs and secondary sex characteristics and are tied to the menstrual cycle and pregnancy. They are considered the main sex hormones in women and are present in small quantities in men.


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: Homocysteine, Homocysteine Cardiovascular


Also known as: Insulin (fasting)


Insulin is a hormone that is produced and stored in the beta cells of the pancreas. It is vital for the transportation and storage of glucose at the cellular level, helps regulate blood glucose levels, and has a role in lipid metabolism. When blood glucose levels rise after a meal, insulin is released to allow glucose to move into tissue cells, especially muscle and adipose (fat) cells, where is it is used for energy production. Insulin then prompts the liver to either store the remaining excess blood glucose as glycogen for short-term energy storage and/or to use it to produce fatty acids. The fatty acids are eventually used by adipose tissue to synthesize triglycerides to form the basis of a longer term, more concentrated form of energy storage. Without insulin, glucose cannot reach most of the body's cells. Without glucose, the cells starve and blood glucose levels rise to unhealthy levels. This can cause disturbances in normal metabolic processes that result in various disorders, including kidney disease, cardiovascular disease, and vision and neurological problems. Thus, diabetes, a disorder associated with decreased insulin effects, is eventually a life-threatening condition.

Also known as: Iodine SerumPlasma, Iodine, Serum

Iodine, Serum/Plasma

Also known as: Iron and TIBC, Iron and Total Iron Binding Capacity TIBC, TIBC

% Saturation

Iron Binding Capacity

Total iron binding capacity (TIBC) is a blood test to see if you may have too much or too little iron in the blood. Iron moves through the blood attached to a protein called transferrin. This test helps your doctor know how well that protein can carry iron in the blood.

Iron, Total

Iron is a mineral that our bodies need for many functions. For example, iron is part of hemoglobin, a protein which carries oxygen from our lungs throughout our bodies. It helps our muscles store and use oxygen. Iron is also part of many other proteins and enzymes. Your body needs the right amount of iron. If you have too little iron, you may develop iron deficiency anemia. Causes of low iron levels include blood loss, poor diet, or an inability to absorb enough iron from foods. People at higher risk of having too little iron are young children and women who are pregnant or have periods.

Also known as: Reverse T3, Reverse Triiodothyronine, RT3, T3 Reverse RT3 LCMSMS, Triiodothyronine Reverse

T3 Reverse, LC/MS/MS

Reverse T3 produced in the thyroid comes from the conversion of the storage hormone T4. Your body, especially the liver, can constantly be converting T4 to RT3 as a way to get rid of any unneeded T4. In any given day approx. 40% of T4 goes to T3 and 20% of T4 goes to Reverse T3. However in any situation where your body needs to conserve energy and focus on something else, it will change the above percentages, changing the conversion of RT3 to 50% or more, and the T3 goes down, down. Examples are emotional, physical, or biological stress, such as being chronically or acutely sick (the flu, pneumonia, etc), after surgery, after a car accident or any acute injury, chronic stress causing high cortisol, being exposed to an extremely cold environment, diabetes, aging, or even being on drugs like beta blockers and amiodarone.

Also known as: Triiodothyronine

T3, Total

Triiodothyronine (T3) is a thyroid hormone. It plays an important role in the body's control of metabolism.

Also known as: Free T3, FT3, T3 Free

T3, Free

This test measures the amount of triiodothyronine, or T3, in the blood.

Also known as: Free T4, FT4, T4 Free

T4, Free

The free T4 test is not affected by protein levels. Since free T4 is the active form of thyroxine, the free T4 test is may be a more accurate reflection of thyroid hormone function.

Also known as: Anti-TPO, Antithyroid Antibodies, TgAb, Thyroglobulin Antibodies TgAb, Thyroglobulin Antibody (TgAb), Thyroid Antibodies, Thyroid Autoantibodies, Thyroid Peroxidase Antibody (TPOAb), Thyroid Stimulating Immunoglobulin, Thyroperoxidase Antibody, Thyrotropin Receptor Antibodies, TPOAb, TSH Receptor Antibody, TSI

Thyroglobulin Antibodies

Measurement of thyroglobulin antibodies is useful in the diagnosis and management of a variety of thyroid disorders including Hashimoto's thyroiditis, Graves Disease and certain types of goiter.

Thyroid Peroxidase

Also known as: Thyroid Stimulating Hormone, Thyroid Stimulating Hormone (TSH), Thyrotropin


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.


*Important Information on Lab Test Processing Times: Ulta Lab Tests is committed to informing you about the processing times for your lab tests processed through Quest Diagnostics. Please note that the estimated processing time for each test, indicated in business days, is based on data from the past 30 days across the 13 Quest Diagnostics laboratories for each test. These estimates are intended to serve as a guide and are not guarantees. Factors such as laboratory workload, weather conditions, holidays, and the need for additional testing or maintenance can influence actual processing times. We aim to offer estimates to help you plan accordingly. Please understand that these times may vary, and processing times are not guaranteed. Thank you for choosing Ulta Lab Tests for your laboratory needs.

The Fatigue Basic Panel panel contains 14 tests with 17 biomarkers.

Feeling constantly drained or lacking the energy you once had? Fatigue can be more than just "feeling tired"—it could be a sign of underlying health imbalances.

The Fatigue Basic Panel is designed to uncover potential hormonal, metabolic, and nutritional reasons behind persistent fatigue. This panel seeks to shed light on what might be zapping your energy by assessing key markers from thyroid function to iron levels.

Imagine finding the answers to your ongoing tiredness, enabling you to take informed steps toward regaining your vitality. With knowledge comes empowerment—the ability to address the root causes and reclaim your day-to-day zest for life.

Don't let fatigue hold you back. Order your Fatigue Panel - Basic test today, and embark on a journey to understanding and revitalizing your energy levels.

Fatigue Basic Panel Test Description

The Fatigue Basic Panel is a specialized set of laboratory tests designed to investigate the underlying causes of fatigue, a common symptom experienced by many but often challenging to diagnose due to its multifaceted origins. This panel focuses on potential hormonal, metabolic, and nutritional imbalances that might contribute to feelings of tiredness or chronic fatigue. Here's a detailed description of each test and its relevance to diagnosing and monitoring fatigue:

  1. DHEA Sulfate, Immunoassay: DHEA is a hormone primarily produced by the adrenal glands. Abnormal levels can indicate stress, adrenal dysfunction, or other hormonal imbalances, which can contribute to fatigue.

  2. Estrogen, Total, Serum: Estrogen plays numerous roles in both men and women. Imbalances can affect mood, energy, and overall vitality, leading to fatigue.

  3. Ferritin: Ferritin is a protein that stores iron in the body. Low levels can indicate iron-deficiency anemia, a common cause of fatigue.

  4. Homocysteine: Elevated levels of this amino acid can be linked to vitamin B deficiencies, impacting energy metabolism and leading to fatigue.

  5. Insulin: Monitoring insulin levels is essential for detecting insulin resistance or issues with glucose metabolism, which can result in fatigue.

  6. Iodine, Serum/Plasma: Iodine is crucial for thyroid function. A deficiency can impact the thyroid's ability to produce hormones, leading to fatigue.

  7. Iron and Total Iron Binding Capacity (TIBC): Iron is crucial for hemoglobin production in red blood cells. Its levels and the body's capacity to bind to it can pinpoint iron-deficiency anemia.

  8. T3 Reverse (RT3), LC/MS/MS: Elevated levels can indicate a specific type of thyroid imbalance, where the body is converting too much T4 into RT3, a non-active form, contributing to symptoms of hypothyroidism and fatigue.

  9. T3 Total & T3, Free: T3 is an active thyroid hormone that plays a crucial role in metabolism. Low levels can lead to hypothyroidism, a primary symptom of which is fatigue.

  10. T4, Free: Another vital thyroid hormone; imbalances can indicate hypothyroidism or hyperthyroidism.

  11. Thyroglobulin Antibodies (TgAb) & Thyroid Peroxidase and Thyroglobulin Antibodies: These are antibodies that, when present, can indicate an autoimmune reaction against the thyroid gland, leading to conditions like Hashimoto's thyroiditis, which often presents with fatigue.

  12. TSH: Thyroid Stimulating Hormone (TSH) regulates the production of T3 and T4. Elevated or decreased levels can indicate thyroid dysfunction, often manifesting as fatigue.

The Fatigue Basic Panel looks into various factors that might contribute to persistent tiredness. By examining potential thyroid issues, hormonal imbalances, and nutrient deficiencies, this panel provides essential insights for individuals seeking to understand and address the root causes of their fatigue.

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