Thyroid Health

Be proactive in your thyroid health with Ulta Lab Tests. Check out our guide to thyroid diseases and thyroid lab testing, and be proactive in your thyroid testing to monitor and track your health.

SEE BELOW THE LIST OF TESTS FOR MORE INFORMATION ABOUT  Thyroid Dissorders and Thyroid Lab Testing

  • Page
  • 3
  • of
  • 3
  • Total Rows
  • 62
Name Matches
: Serum

The TSH with Reflex to Free T4 Test first measures thyroid-stimulating hormone (TSH) to evaluate thyroid function. If TSH is abnormal, the test automatically measures Free T4, the active thyroid hormone, for more accurate diagnosis. Doctors use it to detect hypothyroidism, hyperthyroidism, or pituitary disorders and to investigate symptoms like fatigue, weight changes, or irregular heartbeat. It is also used to monitor thyroid therapy and overall endocrine health.

: Serum
Also Known As: Thyroid Stimulating Hormone Test, Thyrotropin Test, TSH test, TSH with Reflex to FT4 Test

 The Pregnancy TSH test is a specialized laboratory assay designed to measure the level of Thyroid Stimulating Hormone (TSH) in the blood of pregnant individuals. This test is particularly crucial as thyroid function plays a vital role in both maternal health and fetal development.
: Serum
Also Known As: Thyroid Stimulating Hormone Test, Thyrotropin Test, TSH test, Thyroid Test, TSH Screen Test

Most Popular

The Thyroid Stimulating Immunoglobulin (TSI) Test detects antibodies that stimulate the thyroid, often linked to Graves’ disease. It helps confirm autoimmune hyperthyroidism, monitor disease activity, and guide treatment decisions.

: Serum
Also Known As: Thyroid Stimulating Immunoglobulin Test

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.
: Serum
Also Known As: B12 Test, Cobalamin Test

Most Popular

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.

: Serum
Also Known As: B12 Test, Cobalamin Test

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.

: Serum
Also Known As: Ergocalciferol Test, Vitamin D2 Test, Cholecalciferol Test, Vitamin D3 Test, Calcidiol Test, 25-hydroxyvitamin D Test, Calcifidiol Test, 25-hydroxy-vitamin D Test, Vitamin D Total Test

: Serum, Blood

The Thyroid Panel with TSH measures Free T4 Index (T7), T3 Uptake, T4 Total, and thyroid-stimulating hormone (TSH) to evaluate thyroid function and hormone balance. This test helps diagnose hypothyroidism, hyperthyroidism, and other thyroid disorders. Doctors order it to investigate symptoms such as fatigue, weight changes, hair loss, or irregular heartbeat and to monitor treatment. It provides key insight into thyroid health and overall endocrine balance.


: Blood

: Serum

: Serum, Blood, Plasma-Unspecified Vial Pour

Guide to the Thyroid and Thyroid Diseases

Your thyroid is a small butterfly-shaped gland on the base of your throat. The thyroid plays an essential role in helping to control the metabolism of your body by producing thyroid hormones, mainly triiodothyronine (T3) and thyroxine (T4). They are substances that travel through your blood to all parts of your body. Thyroid hormones inform the cells within your body how quickly to produce proteins and use energy. Calcitonin is also made by the thyroid gland. Calcitonin is a hormone that helps with regulating the levels of calcium inside the blood through inhibiting re-absorption (breakdown) of bone as well as increasing the elimination of calcium through the kidneys.     

The body features an elaborate feedback system for controlling the amounts of T3 and T4 inside the blood. Whenever the blood levels of these hormones fall, thyrotropin-releasing hormone is released by the hypothalamus. ... See more