Anti Diuretic Hormone (ADH) Test

Anti Diuretic Hormone (ADH) Test

Category
Hormones
Sample
Blood sample taken from a vein in your arm
Reports () Terms & Conditions Report time varies with time of sample collection.
In 5 days
Fasting
No Fasting
Age
All Ages

What Is This Test?

Measures antidiuretic hormone (ADH, vasopressin), which controls how much water the kidneys keep.

Why this test is performed?

Helps find the cause of low sodium (e.g., SIADH) or of passing large volumes of dilute urine (diabetes insipidus).

Who should take this test?

Symptoms suggesting hormonal imbalance — weight change, fatigue, BP changes, growth problems — usually as advised by a doctor.

Test Preparation

No fasting needed.

Medical disclaimer · for information only, not medical advice

This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.

In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.

Read our Editorial Policy and Medical Review Process.

Frequently asked questions

Yes. It is collected in a chilled tube and processed quickly because ADH is unstable.

No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.

Blood sample taken from a vein in your arm.

Usually within 3–4 days after the sample reaches the lab. You will receive the report online.

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