# Antidiuretic Hormone (ADH), Plasma

> This test measures the level of antidiuretic hormone (ADH) in your blood, a chemical that helps your kidneys manage the amount of water in your body. It is useful for investigating the cause of excessive thirst, frequent urination, or low sodium levels by showing how well your body controls fluid balance. Results help doctors distinguish between different types of water disorders, such as diabetes insipidus. However, because ADH levels fluctuate quickly, this test does not provide a standalone diagnosis and must be compared with urine and blood concentration tests.

- Labcorp code: 010447
- Category: [Hormones](https://app.picardo.health/labs/tests/hormones.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=010447&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.