# Thyroxine (T4) and Thyroid-stimulating Hormone (TSH)

> This test measures levels of Thyroxine (T4), a hormone made by your thyroid gland, and Thyroid-stimulating Hormone (TSH), which signals the thyroid to work. It helps show how well your body regulates energy and metabolism, often used to investigate symptoms like fatigue or unexplained weight changes. By comparing these two levels, doctors can see if your thyroid is overactive or underactive. However, this test does not determine the specific underlying cause of the thyroid issue without further evaluation.

- Labcorp code: 024026
- Category: [Thyroid](https://app.picardo.health/labs/tests/thyroid.md)
- Price: shown at checkout, before payment.
- Blood draw: free at a Labcorp location, or $75.00 at home.
- Order link: https://app.picardo.health/labs/order?tests=024026&ref=assistant

## About ordering

A licensed physician reviews every order before any test is run, and results arrive in the person's Picardo account. Ordering is open to adults 18 and over in the US, except New York, New Jersey, Rhode Island, Pennsylvania, Maryland, Massachusetts, Hawaii and Maine. General health information, not medical advice.