Hyperthyroidism & Graves Disease Lab Tests Special: Save 20%

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 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 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 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 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 Thyroid Peroxidase and Thyroglobulin Antibodies Test measures TPO and TgAb antibodies that target thyroid enzymes and proteins essential for hormone production. High levels are linked to autoimmune thyroid disorders such as Hashimoto’s thyroiditis and Graves’ disease. Doctors order this test to evaluate fatigue, weight changes, neck swelling, or irregular heartbeat and to confirm thyroid autoimmunity. It provides vital insight into thyroid function and endocrine health.

The Thyroid Stimulating Immunoglobulin (TSI) Test detects antibodies that stimulate the thyroid gland, often causing hyperthyroidism and Graves’ disease. High TSI levels may lead to symptoms such as weight loss, rapid heartbeat, or eye problems. Doctors order this test to confirm Graves’ disease, monitor treatment, or assess relapse risk. Results provide essential insight into autoimmune thyroid disorders and guide personalized management strategies.

The Complete Blood Count with Differential and Platelets Test is a comprehensive blood test that checks red blood cells, white blood cells, hemoglobin, hematocrit, and platelets. The differential analyzes types of white blood cells to detect infections, anemia, clotting abnormalities, immune conditions, and certain cancers. This essential test is often ordered for routine health exams, diagnosis, and monitoring treatment progress.

The Comprehensive Metabolic Panel (CMP) Test measures 21 markers to assess metabolic health, liver and kidney function, and electrolyte balance. It includes glucose, calcium, sodium, potassium, chloride, CO2, albumin, globulin, A/G ratio, total protein, bilirubin, ALP, AST, ALT, BUN, creatinine, BUN/creatinine ratio, and eGFR. The CMP helps detect diabetes, liver or kidney disease, and supports routine screening and chronic condition monitoring.

The Iron Total and Total Iron Binding Capacity (TIBC) Test measures iron levels in blood along with the blood’s ability to transport iron. It helps diagnose iron deficiency anemia, iron overload (hemochromatosis), and monitor nutritional or chronic health conditions. Low iron or high TIBC may indicate anemia, while high iron or low TIBC can suggest overload. Doctors use this test to evaluate fatigue, weakness, or other symptoms linked to iron and metabolic health.

The Hemoglobin A1c (HbA1c) Test measures average blood glucose over 2–3 months by detecting sugar attached to hemoglobin in red blood cells. It is used to diagnose diabetes, identify prediabetes, and monitor long-term blood sugar control. Doctors rely on the HbA1c test to evaluate treatment effectiveness, guide adjustments, and assess risk for complications, making it essential for diabetes care and metabolic health screening.

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 Lipid Panel with Ratios Test measures seven key markers: total cholesterol, HDL, LDL, non-HDL cholesterol, triglycerides, Chol/HDL ratio, and LDL/HDL ratio. This advanced panel evaluates cardiovascular risk by assessing cholesterol balance and fat metabolism. Doctors use it to detect high cholesterol, atherosclerosis risk, and heart disease, and to monitor treatment. Often part of routine exams, it provides insight into long-term heart and metabolic health.

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 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.