Thyroid TSH Function Test

Are you interested in knowing more about your thyroid? Choose the Thyroid Function Test to measure a key hormone in thyroid function.
+ $6.00 Physician Service Fee

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Same day appointments available at most of 2000+ Quest Patient Service Centers
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This test measures the level of thyroid stimulating hormone, or TSH, in your blood. If your TSH level is abnormal, your sample will be further tested at no cost to you to help evaluate for a thyroid disorder.
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Must be 18+ years of age to purchase

Orders not permitted in: AK, HI, AZ

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Type of samples to be collected:
Blood (venipuncture—a needle is used to draw blood from a vein)

This test features additional testing, see ‘Reflex’ section for details.

Schedule an appointment, then visit one of our Patient Service Centers.
About the Test
The Thyroid Function Test measures the level of TSH in your blood to help determine that your thyroid gland is functioning properly. Noticeable changes in your metabolism (weight, temperature, and energy) may be a sign or symptom that there is too much or too little TSH in your blood. If TSH levels are too high or too low, this may indicate that your thyroid is overactive (hyperthyroidism) or underactive (hypothyroidism). In either case, T4 blood levels will be evaluated, at no additional cost, to help evaluate a possible thyroid disorder (including hyperthyroidism and hypothyroidism).
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How Does it Work?
Take an in-person test at a Quest Diagnostics location.
Over 2000+ locations focus on your safety, confidentiality and convenience.
1. Purchase your test
Schedule your appointment after purchasing a test to minimize wait time.
2. Visit a location
Enter your zip code to find a Quest Diagnostics location closest to you.
3. Get results online
We will email you when your confidential results are available. 

The benefits of testing

You can get the information you need to support a healthy life - for yourself.

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Take control of your health

Conveniently shop and pay online for lab tests without a doctor's visit. An independent physician will review your request and if appropriate, confirm your order and offer oversight.

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Schedule and manage your appointments

Conveniently schedule your appointment online at one of our Quest Diagnostics locations. Certain tests may also offer self-testing home delivery.

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Get your reliable results online fast

View your results through your secure account online. And it's easy to share the result with your doctor.