# Thyrotropin Receptor Antibody, Serum

> This test measures the level of thyrotropin receptor antibodies, which are proteins made by the immune system that can interfere with how the thyroid gland functions. It is useful for determining if an overactive thyroid is caused by Graves' disease, an autoimmune condition, rather than other types of thyroid disorders. This distinction helps doctors understand the underlying cause of symptoms like rapid heartbeat, weight loss, or anxiety. However, this test only detects the presence of these specific antibodies and does not measure the actual amount of thyroid hormone in your blood.

- Labcorp code: 010314
- 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=010314&ref=assistant
- Already in these panels: [Postpartum Panel](https://app.picardo.health/labs/panels/postpartum.md)

## 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.