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You are here : AllRefer.com > Health > Tests & Exams > LH urine test (home test)

LH urine test (home test)

Alternate Names : Luteinizing hormone urine test (home test), Ovulation prediction test, Urinary LH immunoassays, At-home ovulation prediction test

Definition

An LH urine test detects a rise in lutenizing hormone (LH). Such a rise, or surge, signals the ovary to release the egg. This at-home test is often used by women to help predict ovulation.

Why is the Test Performed?

The test is most often done to determine when a women will ovulate. It may also be used to determine if you need to adjust doses of certain medications.

How is the Test Performed?

Ovulation prediction test kits usually come with five to seven sticks. You may need to test for several days to detect a surge in LH. The specific time of month that you start testing depends on the length of your menstrual cycle. For example, if your normal menstrual cycle is 28 days, you'll need to test on day 11 -- that is, the 11th day after you started your period.

You will need to urinate on the test stick, or place the stick into urine that has been collected into a sterile container. The test stick will turn a certain color or display a positive sign if a surge is detected. A positive result means you should ovulate in the next 24 to 36 hours, but this may not be the case for all women. The kit's instruction booklet will tell you how to properly read the results.

If you miss a day, you may miss your surge. You may also miss recording a surge if you have an irregular menstrual cycle.

How to Prepare for the Test?

Do not drink large amounts of fluids before using the test.

Ask your doctor if you need to stop taking certain drugs before using this test.

Drugs that can decrease LH measurements include estrogens, progesterone and testosterone. Estrogens and progesterone may be found in birth control pills and hormone replacement therapy.

The drug clomiphene citrate (Clomid) can increase LH levels. This drug is used to help trigger ovulation. Women taking this drug should wait three days after stopping the medicine before checking their LH levels.

How will the Test Feel?

The test involves normal urination. There is no pain or discomfort.

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Review Date : 5/15/2009
Reviewed By : Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; and Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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