Nutrition

Nutrition tests provide an objective picture of how your eating pattern and absorption support health. These labs assess vitaminsmineralsfatty acids, and metabolic markers that influence energy, mood, immunity, bone and muscle strength, and long-term heart and brain health. Because nutrient gaps and metabolic issues often begin silently, a proactive testing plan helps you catch problems early and track progress over time.

Start with a baseline—CBC/CMP, vitamin B12 with methylmalonic acid (MMA)folate25-OH vitamin D, and an iron panel with ferritin—then add zincmagnesiumcopper/ceruloplasminseleniumiodine (urine), and fatty-acid balance (Omega-3 Index, omega-6:omega-3 ratio) as needed. Include A1c/fasting glucosefasting insulinlipids (± ApoB, Lp[a])hs-CRP, and TSH to see how nutrition impacts metabolism and inflammation.
Nutrition labs support screeningdiagnostic work-up, and monitoring, but they do not replace a clinician’s evaluation, individualized nutrition guidance, or urgent care for severe symptoms.

Signs, Symptoms & Related Situations

  • Energy & brain: fatigue, brain fog, headaches, low mood, restless legs, tingling or numbness

  • Hair/skin/nails: hair thinning, brittle nails, dry skin, mouth sores or cracks

  • Muscle & bone: cramps, weakness, bone pain or fractures

  • Blood & oxygen: pallor, shortness of breath with exertion, rapid heartbeat (anemia clues)

  • Digestive & absorption: bloating, diarrhea/constipation, greasy stools, unintentional weight loss

  • Thyroid/metabolic: cold intolerance, weight change, high triglycerides, low HDL, elevated prior ALT

  • Higher-risk contexts: vegan/vegetarian diets, bariatric or GI surgery, celiac/IBD, heavy menstrual loss, pregnancy planning, older age, alcohol use disorder, long-term metformin or acid-reducer use

  • Seek urgent care now: chest pain, severe shortness of breath, black/bloody stools, high fever, confusion, or rapidly worsening neurologic symptoms

Symptoms and risks should be reviewed by a qualified clinician.

Why These Tests Matter

What testing can do

  • Detect deficiencies early (iron, B12/folate, vitamin D, zinc, magnesium, iodine, others)

  • Differentiate causes of similar symptoms (iron vs. B12/folate anemia; thyroid vs. micronutrient issues)

  • Quantify metabolic status (A1c/insulin, lipids/ApoB, hs-CRP) and track trends after diet or clinical changes

What testing cannot do

  • Diagnose every cause of symptoms or replace a full medical/nutrition assessment

  • Provide treatment or dosing advice without clinician guidance

  • Predict outcomes with certainty—results inform risk and direction, not final diagnoses

What These Tests Measure (at a glance)

  • CBC/CMP: anemia/infection clues; electrolytes; kidney/liver function; albumin/total protein context.

  • Iron panel with ferritin (Iron, TIBC, Transferrin Saturation): screens for iron deficiency and iron distribution.

  • Vitamin B12 with MMA ± Homocysteine: confirms functional B12 status even when serum B12 seems “normal.”

  • Folate (serum ± RBC): DNA synthesis and red-cell production.

  • 25-Hydroxy Vitamin D: best screen for vitamin D status; bone/muscle health.

  • Minerals: ZincMagnesium (± RBC Mg), Copper + CeruloplasminSeleniumCalcium/Phosphorus; consider PTH for the bone–mineral axis.

  • Iodine (urine): reflects recent iodine intake, useful with thyroid symptoms or low-iodine diets.

  • Metabolic health: A1c/fasting glucosefasting insulinlipid panel (± ApoBLp[a]), hs-CRP (steady-state inflammation), TSH ± Free T4.

  • Fatty-acid balance (optional): Omega-3 Index (RBC EPA+DHA %)omega-6:omega-3 ratioAA:EPA.

Quick Build Guide

Goal / Scenario Start with Add if needed
Wellness nutrition baseline CBC • CMP • 25-OH Vitamin D • B12 + MMA • Iron panel + Ferritin Zinc • Magnesium • Folate
Fatigue/brain fog CBC • B12 + MMA • Ferritin/Iron • TSH Vitamin D • Folate • B1 • B6
Hair/skin/nails issues Ferritin/Iron • Zinc Vitamin D • B12 • Copper
Bone or muscle pain/cramps 25-OH Vitamin D • Calcium • Magnesium • Phosphorus PTH • CK
Weight & metabolic health A1c • Fasting insulin • Lipid panel • hs-CRP ApoB • Lp(a) • Omega-3 Index
Plant-based/vegan B12 + MMA • Ferritin/Iron • 25-OH Vitamin D Zinc • Selenium • Iodine (urine)
Digestive or absorption concerns CBC • CMP • B12 + MMA • Ferritin/Iron • 25-OH Vitamin D Celiac panel • Zinc • Copper • Magnesium
Post-bariatric or GI surgery B12 + MMA • Ferritin/Iron • Folate • 25-OH Vitamin D • Calcium • PTH Zinc • Copper • Thiamine • Selenium • Magnesium
Pregnancy planning CBC • Ferritin/Iron • B12 • Folate • Vitamin D Iodine (urine) • TSH

How the Testing Process Works

  1. Choose your starting set: use the Quick Build Guide to match tests to your goals and history.

  2. Prepare for accuracy: fasting is needed only for panels with fasting glucose/insulin or lipids. Avoid high-dose biotin 24–48 hours before certain assays if instructed.

  3. Provide samples: standard blood drawurine iodine may be a spot urine test.

  4. Get results securely: most values post within a few days.

  5. Review & plan: discuss results with your clinician or dietitian; set a monitoring cadence and adjust your nutrition plan.

Interpreting Results (General Guidance)

  • Low ferritin with low transferrin saturation → typical iron deficiency; assess intake vs. blood loss.

  • Normal B12 with elevated MMA → functional B12 deficiency; correlate with neurologic symptoms.

  • Low vitamin D with elevated/upper-normal PTH → vitamin D insufficiency affecting the bone–mineral axis.

  • Low zinc (especially with low albumin) → poor intake/absorption or inflammation; interpret with context.

  • High B6 level → can contribute to sensory neuropathy; review supplement doses.

  • A1c/insulin elevated, triglycerides high, HDL low → insulin resistance pattern; track after lifestyle changes.
    Ranges vary by lab. Emphasize patterns and trends with a qualified healthcare professional.

Choosing Panels vs. Individual Tests

  • Foundational nutrition panel: CBC • CMP • B12 + MMA • Folate • 25-OH Vitamin D • Iron panel + Ferritin

  • Mineral-focused add-ons: Zinc • Magnesium (± RBC) • Copper + Ceruloplasmin • Selenium • Iodine (urine) • Calcium/Phosphorus • PTH

  • Metabolic add-ons: A1c • Fasting insulin • Lipid panel (± ApoB, Lp[a]) • hs-CRP • TSH

  • Fatty-acid balance (optional): Omega-3 Index • Omega-6:Omega-3 • AA:EPA
    Use bundled panels for efficient screening; add individual markers to answer targeted questions and monitor progress.

FAQs

Do I need to fast for nutrition tests?
Only if your order includes fasting glucose/insulin or lipids. Most vitamin and mineral tests do not require fasting.

Should I stop supplements before testing?
Ask your clinician. List all products on your order. Some tests are drawn after a short washout; others are used to monitor supplementation.

Why pair B12 with MMA?
MMA rises when tissues are short on B12, even if serum B12 looks normal—useful for early deficiency.

Is ferritin alone enough to check iron?
Ferritin is essential, but pairing with iron, TIBC, and transferrin saturation improves accuracy, especially with inflammation.

Are RBC magnesium tests better than serum magnesium?
Both provide context. Serum may miss marginal deficits; RBC magnesium can add insight when symptoms persist.

How often should I retest?
Commonly 8–12 weeks after changes, then every 3–6 months until stable—follow your clinician’s plan.

Can these tests diagnose food intolerance?
Not directly. Intolerances often rely on history and elimination/re-challenge or specific breath/stool tests ordered separately.

Related Categories & Key Tests

  • Nutrition & Wellness Tests Hub

  • All Vitamin & Mineral Deficiency Tests • Micronutrient Testing • Diet Tests • Dietary Fatty Acids Tests • Malabsorption Tests • Metabolism Tests • Anemia & Blood Count

  • Key Tests: CBC • CMP • Iron/TIBC • Transferrin Saturation • Ferritin • Vitamin B12 • MMA • Folate • 25-OH Vitamin D • Zinc • Magnesium (± RBC) • Copper • Ceruloplasmin • Selenium • Iodine (urine) • Calcium • Phosphorus • PTH • A1c • Fasting Glucose • Fasting Insulin • Lipid Panel (± ApoB, Lp[a]) • hs-CRP • TSH • Omega-3 Index • Omega-6:Omega-3 • AA:EPA

References

  • NIH Office of Dietary Supplements — Vitamin and mineral fact sheets.
  • Endocrine Society — Clinical practice guideline on vitamin D evaluation.
  • American Society of Hematology — Iron deficiency evaluation in adults.
  • American Thyroid Association — Iodine and thyroid health resources.
  • Academy of Nutrition and Dietetics — Micronutrient assessment and medical nutrition therapy.
  • American Gastroenterological Association — Malabsorption and chronic diarrhea evaluation.
  • ASPEN/ESPEN — Micronutrient monitoring in clinical nutrition.
  • Clinical reviews on Omega-3 Index/AA:EPA interpretation and insulin resistance assessment.

Available Tests & Panels

Your Nutrition Tests menu is pre-populated in the Ulta Lab Tests system. Start with a foundational panel, then use filters to add mineral-focusedmetabolic, or fatty-acid balance markers that match your goals. Follow any prep instructions and review results with your clinician or dietitian to confirm findings and set a retesting schedule.

Check out the selection of our nutritional panels that combine popular tests for additional value.

For information on the Key Nutrition Lab Tests to Identify Nutritional Deficiencies, click here.

  

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The Albumin Test measures albumin, the main protein made by the liver that maintains fluid balance and transports hormones, vitamins, and medications. Low albumin may indicate liver disease, kidney problems, malnutrition, or chronic inflammation, while high levels may reflect dehydration. Doctors order this test to evaluate swelling, fatigue, or abnormal labs. Results provide key insight into nutritional status, liver and kidney function, and overall metabolic health.

Blood
Blood Draw
Also Known As: ALB Test

Most Popular

The Vitamin B7 Test measures biotin levels in the blood to assess nutritional status and detect deficiency. Biotin is essential for energy metabolism, enzyme activity, and maintaining healthy hair, skin, and nails. Low levels may result from poor diet, genetic conditions, alcoholism, or long-term antibiotic use, leading to fatigue, hair loss, or skin rashes. Doctors use this test to diagnose deficiency, monitor supplementation, and support overall metabolic health.

Also Known As: Biotin Test

Most Popular

The C-Peptide Test measures C-peptide levels in blood to assess insulin production and pancreatic function. Low levels may indicate type 1 diabetes or reduced insulin production, while high levels may suggest type 2 diabetes, insulin resistance, or insulinoma. Doctors use this test to differentiate diabetes types, monitor treatment, and evaluate unexplained hypoglycemia. It provides key insight into endocrine, pancreatic, and metabolic health.

Blood
Blood Draw
Also Known As: Connecting Peptide Insulin Test, Proinsulin C-Peptide Test

Most Popular

The High-Sensitivity C-Reactive Protein (hs-CRP) Test measures very low levels of CRP in blood to evaluate inflammation and cardiovascular risk. Elevated hs-CRP may indicate increased risk for heart disease, heart attack, or stroke even before symptoms appear. Doctors use this test along with cholesterol and other markers to assess overall heart health, guide prevention strategies, and monitor treatment. It also helps evaluate chronic inflammation and metabolic conditions.

Blood
Blood Draw
Also Known As: Cardiac CRP Test, High Sensitivity C-Reactive Protein Test

The Calcium Micronutrient Test measures calcium levels in the blood to assess nutritional status and detect imbalances. Calcium is essential for strong bones and teeth, muscle contraction, nerve signaling, and heart function. This test helps identify deficiencies, excess, or issues with absorption and metabolism, supporting diagnosis and management of bone health, hormonal balance, and overall wellness.

Patient must be 18 years of age or older.
Blood
Blood Draw
Also Known As: Ca Test, Serum Calcium Test, Calcium Blood Test

Most Popular

The Calcium Test measures calcium levels in blood to assess bone health, parathyroid function, and metabolic balance. Abnormal levels may indicate bone disease, parathyroid disorders, kidney disease, or certain cancers. Both low and high calcium can cause muscle spasms, weakness, or irregular heartbeat. Doctors order this test to monitor osteoporosis, kidney stones, or endocrine disorders. Results provide essential insight into bone, nerve, and overall metabolic health.

Blood
Blood Draw
Also Known As: Ca Test, Serum Calcium Test, Calcium Blood Test

The Heavy Metals Micronutrients Blood Test Panel measures levels of arsenic, cadmium, cobalt, lead, and mercury to assess exposure and potential toxicity. These metals, found in the environment, food, or workplaces, can affect the nervous system, kidneys, bones, and overall health. This panel helps detect harmful accumulation, guide treatment, and monitor risks from environmental or occupational exposure.

Patient must be 18 years of age or older.

The Cardio IQ™ Apolipoprotein A1 Test measures ApoA1, the main protein in HDL cholesterol. Higher ApoA1 levels are generally linked to lower cardiovascular risk. This test helps evaluate heart health, lipid metabolism, and supports assessment of cardiovascular disease risk.

Blood
Blood Draw
Also Known As: Apo A1 Test, Apolipoprotein A-1 Test

The Cardio IQ™ Apolipoprotein B Test measures ApoB, the main protein in LDL and other atherogenic lipoproteins. Elevated ApoB levels are linked to higher cardiovascular risk. This test provides a more precise assessment of heart disease risk than standard cholesterol tests and helps guide treatment decisions.

Blood
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Also Known As: Apo B Test, Apolipoprotein B-100 Test

The Hemoglobin A1c (HbA1c) test measures the average blood glucose level over the past two to three months. It provides valuable information about long-term blood sugar control in individuals with diabetes.

Blood
Blood Draw
Also Known As: A1c Test, HbA1c Test, Glycated Hemoglobin Test

The Cardio IQ™ Homocysteine Test measures homocysteine levels in the blood, an amino acid linked to cardiovascular risk. Elevated levels may indicate increased risk for heart disease, stroke, or vitamin deficiencies (B6, B12, folate). This test helps assess cardiovascular health and guide prevention strategies.

Blood
Blood Draw
Also Known As: Homocysteine Cardiac Risk Test

The Cardio IQ™ Insulin Test measures fasting insulin levels in the blood to help evaluate insulin resistance, metabolic health, and risk for conditions like type 2 diabetes and cardiovascular disease. It provides insight into how the body regulates blood sugar and supports personalized risk assessment and treatment planning.

Blood
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Also Known As: Fasting Insulin Blood Test

The Cardio IQ™ Lipid Panel is a test that assesses a patient's risk of cardiovascular disease (CVD) by examining total cholesterol, LDL, HDL, and triglycerides.

Also Known As:  Lipid Profile Test, Lipid Test, Cholesterol Profile Test, Lipids Blood Test

The Cardio IQ™ Lipoprotein (a) Test measures lipoprotein (a), a type of LDL particle linked to increased cardiovascular risk. Elevated levels are largely inherited and not significantly affected by lifestyle. This test helps identify genetic heart disease risk and guide personalized prevention and treatment strategies.

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Also Known As: Lipoprotein A Test, Lpa Test, Lp(a) Test

The Cardio IQ™ Lipoprotein Fractionation Ion Mobility Test separates and measures lipoprotein particles by size and concentration using ion mobility technology. It provides a detailed profile of LDL, HDL, and other subclasses, offering a clearer assessment of cardiovascular risk than standard cholesterol testing.

Blood
Blood Draw
Also Known As: LDL Particle Testing, LDL Subclass Test, LDL Fractionations Test

The NMR Lipoprotein Fractionation Test uses nuclear magnetic resonance to measure particle size and concentration of LDL, HDL, and VLDL cholesterol. Unlike a standard lipid panel, it provides detailed information on lipoprotein subfractions linked to cardiovascular risk. Doctors use this test to assess heart disease risk, guide cholesterol management, and monitor therapy effectiveness. It offers deeper insight into lipid metabolism and cardiovascular health.

Blood
Blood Draw
Also Known As: NMR Test, LDL Particle Testing, LDL Subclass Test, LDL Fractionations Test

The Cardio IQ™ Lp-PLA2 PLAC® Test measures lipoprotein-associated phospholipase A2, an enzyme linked to vascular inflammation and plaque instability. Elevated levels are associated with increased risk of coronary heart disease and ischemic stroke. Doctors use this blood test to assess cardiovascular risk beyond standard cholesterol testing, helping guide prevention and treatment strategies to reduce risk of heart attack or stroke.

Also Known As: LpPLA2 Test, Ps-PLA2 Activity Test, Lipoprotein-Associated Phospholipase A2 Test

Did you know almost 10% of people in the United States have nutrition deficiencies? The most common deficiencies are iron, vitamin B12, calcium, magnesium, and vitamin D.

You can have nutritional deficiencies and not even realize it. For this reason, nutrition lab tests are essential tools for managing your health.

When you get nutrition tests, you also get insight into improving your health the right way. Keep reading this guide to learn more about nutritional deficiencies and nutrition lab tests.

What are Nutritional Deficiencies

There are many nutrients we take in daily that are important for our overall health. Most of the time, our body can get these nutrients from the foods that we eat. 

But when your typical diet lacks in fruits and vegetables and is high in sugar and saturated fats, then nutritional deficiencies become more common than you realize.

Different health problems can cause a diet that is lacking in vitamins. Kidney disease or celiac disease can cause you not to absorb the right amount of vitamins and minerals.

Food intolerances due to inflammatory bowel disease or a problem with malabsorption in your gut can lead to big problems with nutrition. There are types of nutritional deficiencies that lead to disease, including:

  • A lack of calcium can lead to rickets and osteoporosis
  • An iodine deficiency leads to a goiter
  • Iron deficiency can cause iron deficiency anemia
  • Zinc deficiencies can cause stunted growth
  • Vitamin C deficiencies can cause scurvy

It's also important to remember that every person is an individual, and some people may require more of certain vitamins to prevent disease than others.

Risk Factors for a Nutritional Deficiency

Surprisingly, nutritional deficiencies can happen to anyone and aren't specific to certain countries or locations. Risk factors for nutritional deficiencies include:

  • Anemia
  • Heavy menstrual periods
  • Pregnancy
  • Drinking heavily
  • Smoking
  • Vomiting and diarrhea
  • Chronic illness

Your socioeconomic status is also a risk factor. Many people cannot afford proper nutrition and end up eating alone.

What Causes a Nutritional Deficiency

Any deficiency in vitamins or minerals can cause a nutritional deficiency, but the basic causes are an inadequate intake or absorption of nutrients and vitamins. 

This can be for many reasons, but the most common causes for this include:

  • Being vegan, vegetarian, or following a strict diet
  • Overcooking your food constantly
  • Medical conditions that interfere with vitamin absorption
  • Drinking alcohol can lead to a vitamin C deficiency
  • Taking certain medications like antacids and seizure medications

Smoking can also decrease vitamin C as it tends to decrease the amount your body can absorb.

Symptoms of a Nutritional Deficiency

Eating well-balanced meals has benefits beyond maintaining a healthy weight. Eating a balanced diet keeps your body healthy and able to fight off disease and illness.

The symptoms and signs of a nutritional deficiency include:

  • Brittle hair and nails
  • Mouth ulcers or sores in the corners of your mouth
  • Bleeding gums
  • Trouble seeing at night
  • Dry and scaly skin patches
  • Dandruff
  • Hair loss

Nutritional deficiencies also can cause a condition called restless leg syndrome. This is a nerve condition that causes unpleasant or uncomfortable sensations in your legs, along with a constant urge to move them. The link is not completely understood, but there seems to be a relationship between blood iron levels and restless leg syndrome.

Diagnosing a Nutritional Deficiency

If you suspect you might have nutritional deficiencies, it's important to make an appointment to see your doctor. 

Your doctor will ask you about your past medical history, your current symptoms, and do a physical exam. Most likely, your doctor will order bloodwork to assess your current nutritional state and check for any deficiencies. 

Over time, imbalances in your nutrition can lead to weight loss, loss of muscle mass, and even bone density. For this reason, blood tests are the most powerful tool to help identify nutritional problems early on and prevent disease onset. 

Treatment for a Nutritional Deficiency

Treatment depends on if your nutritional deficiency is minor or more severe. Many times a simple change in eating habits can correct any deficiencies you might have.

People with iron deficiency anemia are often advised to eat more meat, poultry, eggs, and iron-fortified grains and cereals. If your deficiency is more severe, you may be referred to see a registered dietician and asked to keep a journal of the food you're eating each day. 

A dietician will go over your diet in detail and help you to modify your habits by making recommendations based on your needs. Many times you'll be asked to add fruits, vegetables, and whole grains into your diet. 

Some deficiencies need more than just a change in diet alone, and you may need to take a vitamin or mineral supplement. Your dietician will work together to determine how often you should take your supplements and if they're safe, along with any medications you may be taking.

Lab Tests to Screen for Nutritional Deficiencies

Ulta Lab Tests has a huge selection of nutrition and vitamin panels you can choose from, depending on your needs.  

One of the best panels to start with is a vitamins and minerals panel. This panel includes a group of tests that measures important blood, vitamin, and mineral levels. A complete blood count (CBC) checks the levels of your blood cells, platelets, white blood cells and will detect conditions like anemia.

Next is a comprehensive metabolic profile (CMP) which measures your protein level, electrolyte levels, calcium, kidney, and liver function. This test gives a good indication of nutrition by checking how your organs are functioning. 

Having a low iron level can contribute to health problems like anemia and restless leg syndrome. You'll need to have your total iron level checked to rule out conditions like iron deficiency.

Vitamin B12Zinc, and Vitamin D levels should also be evaluated. Vitamin B is found in milk, eggs, red meat, fish, and is essential for normal red blood cells. In addition, low zinc levels can cause slow wound healing and a decrease in immune system function. And Vitamin D is essential for the overall health of your bones.

Normal magnesium levels are critical for almost all of the chemical processes in your body and keep your bones strong. Magnesium is also essential for normal heart function and blood pressure regulation.

Other Lab Tests

Omega-3 and 6 are essential fatty acids that your body needs to maintain its daily functions. Your body doesn't make these fatty acids on its own, so you must consume them in your diet.

You can find Omega-3 and in foods like salmon, nuts, seeds, and sunflower oil. These fatty acids are essential for heart health and to lower your overall risk of cardiovascular disease.

Iodine is an essential element that your body needs to make thyroid hormones. Measuring your iodine level is a great way to see if your dietary intake is enough. And vitamin K is essential for healthy bones, tissues, and normal blood clotting.

FAQS About Nutritional Deficiencies

Did you know the foods you eat can have a huge impact on chronic health conditions? For example, if you have arthritis, you should avoid processed foods, and saturated fats, increasing the pain you experience.

When you have arthritis, certain foods and nutrients can be beneficial, like:

  • Beans are full of fiber which help lower inflammation in your body
  • Fish contains omega-3 fatty acids, which are crucial for heart health
  • Fruits and vegetables contain antioxidants
  • Nuts and seeds improve inflammation

Where is a good resource to find what nutrients to take in each day? It's a good idea first to take a look at the dietary guidelines established for Americans. You can check these guidelines for new recommendations for infants, toddlers, pregnant women, adults, and older adults.

Can magnesium prevent headaches? Some studies suggest that people who consume more magnesium in their diet may decrease their chances of getting migraines. You should talk to your doctor before trying this, as taking too much magnesium can cause health problems.

Nutrition Lab Tests With Ulta Lab Tests

Ulta Lab Tests offers highly accurate tests, allowing you to make the best decisions about your health.

Here are a few great things for you to love about Ulta Lab Tests:

  • You'll always get secure and confidential results
  • You never need health insurance
  • You don't need a physician's referral
  • Always affordable pricing
  • A 100% satisfaction guarantee every time you order

If you order your nutritional lab tests today and your results will be provided to you securely online within 24 to 48 hours in most cases.

It's time to take charge of your health and visit Ulta Lab Tests today!