Thyroid TSH Function Test
This thyroid TSH test measures the level of thyroid-stimulating hormone (TSH) in your blood that can help determine if your thyroid is functioning properly and identify signs of hypothyroidism or hyperthyroidism. If results are abnormal, a reflex test for free T4 will be performed at no additional cost to help identify a possible thyroid disorder.
This test is commonly used as a starting point in evaluating thyroid function. Noticeable changes in your metabolism (eg, weight, temperature, and energy) may be an indication of abnormal levels of thyroid-stimulating hormone (TSH) in your blood. If you are looking for a more complete thyroid panel that includes everything in this panel plus thyroid peroxidase (TPO) antibodies, consider our Thyroid Disorder Monitoring — Initial panel; and if you are looking for a more comprehensive hormone workup including everything in that panel plus free T3, consider our Women's Hormone Test Panel — Expanded.
No doctor’s visit needed.
Thyroid-stimulating hormone (TSH) is measured in the blood to help evaluate thyroid function.
About the thyroid
The thyroid is a butterfly-shaped gland in the front of the neck that helps regulate how your body uses energy. It plays a role in many essential processes, including metabolism, heart rate, body temperature, and nervous system function. Thyroid activity is regulated by the pituitary gland, which produces thyroid-stimulating hormone (TSH). TSH signals the thyroid to produce thyroid hormones—primarily T4. When this system is out of balance, it can lead to thyroid disorders that affect many parts of the body. While untreated thyroid disease can increase the risk of complications, most thyroid conditions can be effectively managed with medication and regular monitoring.
Thyroid-stimulating hormone (TSH)
TSH helps control how much thyroid hormone your body produces.
High TSH levels may indicate an underactive thyroid (hypothyroidism)
Low TSH levels may indicate an overactive thyroid (hyperthyroidism)
TSH is often the first marker used to assess thyroid function and is commonly tracked over time in people with known thyroid conditions. If test results identify abnormal TSH levels, free thyroxine (T4) blood levels will be tested using your submitted sample at no additional cost to you to provide information needed to help your healthcare provider diagnose hypothyroidism.
Preparation
No special preparation is required.
Turnaround
2-3 business days
Sample Type
Blood
What's Included
Physician Order
We provide the necessary doctor's order for this test.
Lab Fees
All laboratory processing fees are included in the price.
Digital Results
Secure, easy-to-read results delivered to your portal.
How It Works
Book Online
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