Fitness & Training

The Sex Hormone Binding Globulin (SHBG) Test measures SHBG, a protein that binds testosterone and estrogen, to assess how much active hormone is available in the body. Abnormal levels may indicate PCOS, infertility, low testosterone, liver disease, or thyroid disorders. Doctors order this test to investigate symptoms like low libido, irregular periods, acne, or hair loss and to evaluate hormone balance, endocrine function, and metabolic health in men and women.

The T3 Reverse (rT3) Test measures reverse triiodothyronine, an inactive thyroid hormone, to assess thyroid and metabolic function. High rT3 may occur in hypothyroidism, chronic illness, stress, or during certain treatments, while low levels may reflect hormone imbalance. Doctors use this test along with TSH, Free T4, and Free T3 to evaluate fatigue, weight changes, or slow metabolism. The rT3 Test provides insight into thyroid regulation, energy balance, and endocrine health.

The T3 Total Test measures total triiodothyronine (T3), a combination of both bound and unbound (free) T3, to assess thyroid function. Abnormal levels may indicate hyperthyroidism, hypothyroidism, goiter, or pituitary disorders. Doctors use this test to evaluate symptoms like fatigue, weight changes, anxiety, or irregular heartbeat and to monitor thyroid treatment. The T3 Total Test provides essential insight into metabolism, energy regulation, and overall endocrine health.

The T3 Uptake Test estimates thyroid hormone-binding capacity by measuring how well proteins in the blood bind triiodothyronine (T3). It does not measure T3 directly but helps assess thyroid function when combined with Total T4. Abnormal results may indicate hyperthyroidism, hypothyroidism, pregnancy, or protein-binding disorders. Doctors use this test to investigate fatigue, weight changes, or irregular heartbeat and to guide thyroid treatment decisions.

The T3 Free Test measures free triiodothyronine (T3), the active thyroid hormone not bound to proteins, to assess thyroid function. It helps diagnose hyperthyroidism, hypothyroidism, goiter, and pituitary disorders. Doctors order this test to evaluate symptoms like fatigue, weight changes, anxiety, or irregular heartbeat and to monitor thyroid replacement or antithyroid therapy. The Free T3 Test provides key insight into metabolism, energy regulation, and overall endocrine health.

The T4 Total Test measures total thyroxine (T4) in blood, a combination of both bound and unbound (free) T4, to assess thyroid function. Abnormal levels may indicate hypothyroidism, hyperthyroidism, goiter, or pituitary disorders. Doctors use this test to evaluate symptoms like fatigue, weight changes, hair loss, or irregular heart rate and to monitor thyroid replacement or antithyroid therapy. The T4 Total Test provides key insight into metabolic, hormonal, and endocrine health.

The T4 Free Test measures the level of free thyroxine (T4) in blood, the active thyroid hormone not bound to proteins. It helps diagnose thyroid disorders such as hypothyroidism, hyperthyroidism, and goiter, as well as pituitary conditions affecting hormone regulation. Doctors use this test to evaluate symptoms like fatigue, weight changes, hair loss, or irregular heartbeat and to monitor thyroid replacement or antithyroid therapy, providing insight into metabolic and endocrine health.

The Testosterone Free and Total Test measures total testosterone and free, bioavailable testosterone in blood for both men and women. It helps diagnose hormone imbalance, infertility, low libido, erectile dysfunction in men, irregular periods, or PCOS in women. Doctors also order it to assess fatigue, mood changes, or muscle weakness and to monitor hormone therapy. This test provides key insight into reproductive, endocrine, and overall metabolic health.

The Testosterone Free and Total and Sex Hormone Binding Globulin (SHBG) Test measures total testosterone, free testosterone, and SHBG to assess hormone balance in men and women. It helps diagnose infertility, erectile dysfunction, low libido, irregular periods, PCOS, and abnormal puberty. Doctors also use it to evaluate fatigue, muscle weakness, or mood changes and to monitor hormone therapy. This test provides a comprehensive view of reproductive, endocrine, 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 Thyroid Stimulating Hormone (TSH) Test measures TSH levels in blood to assess thyroid function and diagnose hypothyroidism or hyperthyroidism. It evaluates how the thyroid controls metabolism, energy, weight, and heart rate. Doctors use the TSH test to investigate symptoms such as fatigue, hair loss, or mood changes. Frequently included in routine health exams, it is also key for monitoring thyroid disease treatment and overall endocrine balance.

The Uric Acid Test measures uric acid levels in blood to assess kidney function and detect gout, a form of arthritis caused by uric acid buildup. High levels may also signal kidney disease, kidney stones, or metabolic disorders, while low levels can occur with liver disease. Doctors use this test to investigate joint pain, swelling, or frequent urination, and to monitor treatment for gout, kidney stones, or chemotherapy-related complications.

The Urinalysis Complete Test evaluates urine for physical, chemical, and microscopic properties to assess kidney health, urinary tract infections, diabetes, and metabolic disorders. It measures appearance, concentration, pH, protein, glucose, ketones, blood, bilirubin, nitrites, leukocyte esterase, and microscopic cells or crystals. Doctors use this test in routine exams, to diagnose urinary symptoms, and to monitor chronic kidney or metabolic disease.

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 D 25-Hydroxy Total Test measures levels of 25-hydroxyvitamin D in blood to evaluate vitamin D status, bone health, and calcium balance. It helps detect deficiency, insufficiency, or toxicity, which can affect immune function, muscle strength, and risk of osteoporosis. Doctors use this test to assess overall nutritional health, monitor supplementation, and support diagnosis of metabolic or endocrine disorders linked to vitamin D.

The QuestAssureD™ Vitamin D 25-Hydroxy Total Test measures Vitamin D2, Vitamin D3, and total 25-hydroxy vitamin D to assess overall vitamin D status. Adequate vitamin D supports bone strength, calcium absorption, immune health, and muscle function. Low levels may cause osteoporosis, weakness, or increased disease risk, while high levels can indicate toxicity. Doctors use this test to diagnose deficiency, monitor supplementation, and evaluate metabolic and endocrine health.

The Vitamin E Micronutrient Test measures blood levels of vitamin E to assess antioxidant status and detect deficiencies or excess. Vitamin E protects cells from oxidative damage, supports immune function, and promotes cardiovascular and neurological health. This test helps identify poor dietary intake, absorption issues, or toxicity from supplements, aiding in diagnosis and management of overall wellness.

Patient must be 18 years of age or older.

The Vitamin E Test measures blood levels of vitamin E, a fat-soluble antioxidant essential for protecting cells, supporting immunity, and maintaining nerve and muscle health. Low levels may result from poor diet, malabsorption, or liver disease, leading to weakness or vision problems. High levels can occur with excessive supplementation. Doctors order this test to assess nutritional status, monitor chronic illness, or guide therapy for deficiency or toxicity.

The Zinc Micronutrient Test measures blood zinc levels to evaluate nutritional status and detect deficiencies or excess. Zinc is vital for immune function, wound healing, growth, reproduction, and enzyme activity. This test helps identify poor intake, malabsorption, or excessive supplementation, supporting diagnosis and management of overall health, immune balance, and metabolic function.

Patient must be 18 years of age or older.

The Zinc Test measures zinc levels in blood to evaluate nutritional status and overall health. Zinc is essential for immune function, wound healing, growth, taste, and reproductive health. Abnormal levels may cause fatigue, hair loss, delayed healing, or increased infection risk. Doctors use this test to detect zinc deficiency or excess, monitor supplementation, and guide treatment for conditions linked to immune, metabolic, or endocrine imbalance.