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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.
$49.00
+ $6.00 Physician Service Fee
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What
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.
Treatment options may be available. See "After the Test" section.
Who
Must be 18+ years of age to purchase
Orders not permitted in: AK, HI, AZ
How
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).

How Does it Work?
In-Person at Quest Patient Service Centers
We are never far. Make an appointment at one of our 2,000+ U.S. locations.
1. Purchase your test
Schedule your appointment after purchasing a test to minimize wait time.
2. Visit a center
Enter your zip code to find a Quest center closest to you.
3. Get results online
We will email you when your confidential results are available.
In-Person at Quest Patient Service Centers
We are never far. Make an appointment at one of our 2,000+ U.S. locations.
1. Purchase your test
Schedule your appointment after purchasing a test to minimize wait time.
2. Visit a center
Enter your zip code to find a Quest center 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.

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.

Schedule and manage your appointments
Conveniently schedule your appointment online at one of our Quest Patient Service Centers or drive-through locations. Certain tests may also offer self-testing home delivery.

Get your results online
View your results through your secure account online. And it's easy to share the result with your doctor.
FAQs
About 5 percent of Americans who are 12 years old or older have hypothyroidism. Many people who have hypothyroidism are unaware.
Hypothyroidism is more common.
Currently, there is no evidence to support routine screening of your thyroid function. You may consider checking your thyroid function if you are having symptoms of a thyroid disorder or if you are at high risk for developing a thyroid disease.
If you have been diagnosed with a thyroid disorder, you may have your thyroid function checked more frequently. Consult with your healthcare provider to determine a longer-term care plan.
If you have been diagnosed with a thyroid disorder, you may have your thyroid function checked more frequently. Consult with your healthcare provider to determine a longer-term care plan.
Even if you don’t have symptoms, you may consider testing if you have the following risk factors:
• Family history of thyroid disease
• Women
• People over age 50
• Have an autoimmune disease such as type 1 diabetes
• History of thyroid surgery
• Radiation treatment for a past thyroid condition
• Recent pregnancy
• Taking medication high in iodine
• Family history of thyroid disease
• Women
• People over age 50
• Have an autoimmune disease such as type 1 diabetes
• History of thyroid surgery
• Radiation treatment for a past thyroid condition
• Recent pregnancy
• Taking medication high in iodine