All Vitamin and Mineral Deficiency Tests

The Prealbumin Test measures levels of prealbumin, a protein made by the liver that reflects short-term nutritional status. Low levels may indicate malnutrition, liver disease, inflammation, or chronic illness, while high levels may be linked to kidney disease or steroid use. Doctors use this test to assess protein-calorie nutrition, monitor patients receiving nutritional support, and guide treatment for conditions affecting metabolism and recovery.

The Protein C Activity Test measures the activity of protein C, a natural anticoagulant that regulates blood clotting. Low activity can indicate inherited or acquired protein C deficiency, increasing the risk of abnormal clot formation, deep vein thrombosis, or pulmonary embolism. This test supports evaluation of clotting disorders and provides insight into overall coagulation balance and vascular health.

The QuestAssureD™ Vitamin D 25-Hydroxy Total Test for Infants measures total vitamin D levels to evaluate bone health, calcium balance, and overall growth. Adequate vitamin D is essential for skeletal development, immune function, and preventing rickets. Physicians use this test to identify deficiency, monitor supplementation, and ensure infants receive the nutrients needed for proper development and long-term health.

The Selenium Micronutrient Blood Test measures selenium levels in the blood to assess nutritional status and detect deficiencies or excess. Selenium is a powerful antioxidant that supports thyroid function, immune defense, and protection against oxidative stress. This test helps identify dietary insufficiency, malabsorption, or toxicity, supporting diagnosis and management of overall health and wellness.

Patient must be 18 years of age or older.

The Selenium Test measures selenium levels in blood to evaluate nutritional status and overall health. Selenium is essential for thyroid function, antioxidant defense, and immune support. Low levels may cause fatigue, muscle weakness, thyroid problems, or impaired immunity, while high levels may indicate toxicity. Doctors use this test to monitor nutrition, supplementation, or suspected deficiency. Results provide key insight into metabolic health and antioxidant balance.

The Sodium Test measures sodium levels in the blood, an electrolyte essential for fluid balance, nerve function, and muscle activity. Abnormal sodium may indicate dehydration, kidney disease, adrenal disorders, or heart failure. Doctors use this test to investigate symptoms like confusion, weakness, or swelling and to monitor patients with chronic illnesses, diuretic use, or intravenous therapy, ensuring proper electrolyte and metabolic health.

The Transferrin Test measures transferrin, a blood protein that transports iron, to evaluate iron status and nutritional health. High levels may suggest iron deficiency anemia, while low levels may indicate liver disease, malnutrition, or chronic illness. Doctors use this test alongside iron and TIBC to investigate fatigue, weakness, or anemia symptoms. Results provide vital insight into iron balance, red blood cell production, and overall metabolic function.

The Vitamin A Micronutrient Test measures blood levels of vitamin A (retinol) to assess nutritional status and detect deficiencies or excesses. Adequate vitamin A is essential for vision, immune defense, reproduction, and cellular health. This test helps evaluate malnutrition, absorption issues, or toxicity from supplements, supporting diagnosis and monitoring of overall health.

Patient must be 18 years of age or older.

The Vitamin A Test measures blood levels of vitamin A, a nutrient essential for vision, immune function, reproduction, and skin health. Low levels may indicate malnutrition, fat malabsorption, or liver disease, while high levels may suggest toxicity from over-supplementation. Doctors use this test to investigate night blindness, frequent infections, or poor wound healing. Results provide vital insight into nutritional status, metabolic function, and overall wellness.

The Vitamin B1 Blood Test measures thiamine levels to assess nutritional status and detect deficiency. Vitamin B1 is essential for energy metabolism, nerve function, and muscle health. Low levels may cause weakness, fatigue, irritability, or serious conditions such as beriberi or Wernicke-Korsakoff syndrome. Doctors order this test for patients with poor diet, alcoholism, or unexplained neurological symptoms. Results provide key insight into vitamin balance and metabolic health.

The Vitamin B1 Blood Micronutrient Test measures thiamine levels in the blood to assess nutritional status and detect deficiencies. Thiamine is essential for energy production, nerve function, and carbohydrate metabolism. This test helps identify malnutrition, absorption disorders, or risk from poor diet or alcohol use, supporting diagnosis and management of overall health.

Patient must be 18 years of age or older.

The Vitamin B1 Plasma/Serum Test measures thiamine levels in blood to evaluate nutritional status and detect deficiencies. Thiamine is essential for energy metabolism, nerve function, and muscle health. Low levels may result from poor diet, alcoholism, malabsorption, or chronic illness and can lead to conditions like beriberi or Wernicke-Korsakoff syndrome. Doctors use this test to confirm deficiency and monitor supplementation or therapy effectiveness.

The Vitamin B12 Micronutrient Test measures blood levels of vitamin B12, essential for red blood cell production, nerve health, and DNA synthesis. Deficiency can cause anemia, fatigue, neurological issues, and cognitive changes. This test helps identify dietary deficiencies, absorption problems, or related health conditions, supporting diagnosis and ongoing management of overall wellness.

Patient must be 18 years of age or older.

The Vitamin B12 Test measures cobalamin levels in blood to evaluate nutritional health, red blood cell production, and nervous system function. Low B12 can cause anemia, fatigue, weakness, memory problems, and nerve damage, while high levels may indicate liver or kidney disease. Doctors use this test to detect B12 deficiency, monitor treatment, and assess malabsorption conditions like pernicious anemia, Crohn’s disease, or celiac disease.

The Vitamin B12 and Folate Panel Test measures blood levels of vitamin B12 and folate to evaluate nutritional status, red blood cell production, and nervous system health. Deficiencies may cause anemia, fatigue, weakness, neuropathy, or cognitive decline, while elevated levels can indicate liver or kidney disease. Doctors use this panel to diagnose deficiency, monitor therapy, and assess absorption disorders such as pernicious anemia, Crohn’s disease, or celiac disease.

The Vitamin B2 Micronutrient Test measures riboflavin levels in the blood to evaluate nutritional status and detect deficiencies. Riboflavin is vital for energy production, red blood cell function, and the metabolism of fats, carbohydrates, and proteins. This test helps identify dietary insufficiency, malabsorption issues, or increased nutrient needs, supporting overall health assessment and management.

Patient must be 18 years of age or older.

The Vitamin B2 Test measures riboflavin levels in the blood to assess nutritional status. Riboflavin is essential for energy metabolism, red blood cell production, and maintaining healthy skin, eyes, and nerves. Low levels may result from poor diet, malabsorption, or chronic illness, leading to fatigue, mouth sores, or anemia. Doctors use this test to detect deficiency, monitor supplementation, and support overall metabolic and nutritional health.

The Vitamin B3 Micronutrient Test measures niacin levels in the blood to assess nutritional status and detect deficiencies or excess. Niacin is essential for energy production, nervous system function, and healthy skin and digestion. This test helps identify malnutrition, absorption problems, or toxicity from supplements, supporting diagnosis and monitoring of overall health and metabolic balance.

Patient must be 18 years of age or older.

The Vitamin B3 Test measures niacin levels in the blood to evaluate nutritional status and detect deficiencies. Niacin is essential for energy metabolism, DNA repair, and nervous system function. Low levels may lead to pellagra, with symptoms such as diarrhea, dermatitis, dementia, and fatigue. Doctors use this test to assess dietary intake, investigate unexplained symptoms, and monitor patients on supplementation or therapy for metabolic health.

The Vitamin B5 Micronutrient Test measures pantothenic acid levels in the blood to evaluate nutritional status. Vitamin B5 is essential for energy metabolism, hormone production, and synthesis of fats, proteins, and neurotransmitters. This test helps detect deficiencies or imbalances caused by poor diet, malabsorption, or increased nutrient needs, supporting overall health and metabolic function.

Patient must be 18 years of age or older.

The Vitamin B5 Test measures pantothenic acid levels in the blood to assess nutritional status and detect deficiencies. Vitamin B5 is essential for energy metabolism, hormone production, and synthesis of coenzyme A. Low levels may cause fatigue, irritability, digestive upset, or neurological issues, often linked to poor diet or malabsorption. Doctors use this test to confirm deficiency, guide supplementation, and monitor overall metabolic and nutritional health.

The Vitamin B6 Micronutrient Test measures pyridoxine levels in the blood to assess nutritional status and detect deficiencies or excess. Vitamin B6 is essential for protein metabolism, neurotransmitter production, hemoglobin synthesis, and immune function. This test helps identify dietary insufficiency, absorption issues, or toxicity, supporting diagnosis and management of overall health and metabolic balance.

Patient must be 18 years of age or older.

The Vitamin B6 Test measures pyridoxal phosphate levels in blood to evaluate vitamin B6 status. Deficiency may cause anemia, confusion, irritability, depression, or weakened immunity, while high levels from supplementation may lead to nerve damage. Doctors use this test to investigate neurological symptoms, nutritional health, or metabolic disorders. Results provide essential insight into vitamin balance, nerve health, red blood cell production, and overall wellness.

The Vitamin C Micronutrient Test measures blood levels of ascorbic acid to assess nutritional status and detect deficiencies. Vitamin C is vital for immune defense, collagen formation, wound healing, and antioxidant protection. This test helps identify poor dietary intake, absorption issues, or increased needs due to illness or stress, supporting diagnosis and management of overall health.

Patient must be 18 years of age or older.

The Vitamin C Test measures blood levels of vitamin C (ascorbic acid), an essential nutrient for immune defense, wound healing, collagen production, and antioxidant protection. Low levels may indicate poor diet, malabsorption, or scurvy, while high levels may occur with excess supplementation. Doctors order this test for patients with fatigue, bleeding gums, or poor wound healing. Results help assess nutritional status and guide treatment or dietary adjustments.