Luteinizing Hormone (LH) Test
- Category
- Women's Health
- Sample
- Blood sample taken from a vein in your arm
- Reports () Terms & Conditions Report time varies with time of sample collection.
- In 2 days
- Fasting
- No Fasting
- Age
- 5+ Years
What Is This Test?
Measures luteinizing hormone (LH), a pituitary hormone that triggers ovulation in women and testosterone production in men.
Why this test is performed?
Helps evaluate irregular periods, infertility, PCOS (often a high LH:FSH ratio), menopause and pituitary problems, and low testosterone in men.
Who should take this test?
Irregular or absent periods, PCOS symptoms (acne, excess hair), infertility, pregnancy planning or menopause symptoms.
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.
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- Report time: In 2 days
- No fasting
- Report time: In 2 days
- No fasting
- Report time: In 33 days
- No fasting
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- Report time: In 2 days
- No fasting
Frequently asked questions
For women, your doctor may ask for the sample on a specific day of the menstrual cycle (often day 2–5).
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 12–36 hours after the sample reaches the lab. You will receive the report online.
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