Thyroid Health Blood Test

Sample Type:
Sample Type
Age: 18+
Collection Method: Visit a Labcorp Location
HSA/FSA Accepted
Short Description

This thyroid blood test package can help give you insights into your overall health.


The thyroid gland is located at the base of your neck and produces a hormone that influences every cell, tissue, and organ in the body. It may be small, but it can have a big impact on your health and wellbeing, influencing how fast your heart beats, how quickly your body burns calories and even your mood and fertility.

The Comprehensive Thyroid Test measures both thyroid-stimulating hormone (TSH) and Free T4 (thyroxine) in your blood to assess thyroid function. It screens for specific thyroid health conditions such as underactive thyroid (hypothyroidism) and overactive thyroid (hyperthyroidism).



If you’re taking a supplement containing biotin (also called vitamin B7 or B8, vitamin H, or coenzyme R), commonly found in products promoting nail, skin, and hair health, it is recommended that you wait at least 72 hours from your last dose before sample collection.

What's Included

Thyroid Stimulating Hormone (TSH)

A hormone that stimulates the thyroid gland to produce T4 (thyroxine) and T3 (triiodothyronine), two hormones that play critical roles in controlling the body’s metabolism.

T4 (Thyroxine)

A hormone produced by the thyroid gland, in conjunction with Triiodothyronine T3, that is responsible for regulating body temperature, heart rate, and metabolism.

Why Consider This Test

Specific Thyroid Concerns
Specific Thyroid Concerns

Tests that measure both TSH and T4 can be used together to screen for and help diagnose thyroid conditions, including hypothyroidism (under-active thyroid) and hyperthyroidism (an over-active thyroid).2

Female Health and Fertility
Female Health and Fertility

Women are five to eight times more likely than men to have thyroid problems. Hypothyroidism is a leading cause of difficulty in achieving and maintaining pregnancy.2

Proactive Prevention
Proactive Prevention

Undiagnosed thyroid disease may put patients at risk for certain serious conditions such as cardiovascular diseases, osteoporosis, and infertility. Most thyroid conditions can be managed with medication.2


  1. “Thyroid Stimulating Hormone (TSH).” Lab Tests Online, The American Association for Clinical Chemistry, www.labtestsonline.org/tests/thyroid-stimulating-hormone-tsh?gclid=Cj0KCQjw4qvlBRDiARIsAHme6ou6S5VEYTZWydE3z5j-0taZURMhSNPtt-iZ2FXrLTtqUQyN46rDsyIaAuwgEALw_wcB.
  2. American Thyroid Association. “General Information/Press Room.” American Thyroid Association, www.thyroid.org/media-main/press-room/.

How To Get This Test

Choose Your Tests
1. Choose Your Tests

Shop for tests and pay online. An independent physician will review and approve your test requests; no doctor’s visit is required.



Provide Your Sample
2. Provide Your Sample

Take the requisition number we emailed you, along with a photo ID, to a Labcorp location for sample collection.




Access Your Results Online
3. Access Your Results Online

View your easy-to-read results online in your OnDemand or Labcorp PatientTM accounts, including Linked Accounts (click here for more details). For certain results that require prompt attention, you will be also be contacted by PWN health via phone or mail.