Luteinizing Hormone (LH) LabCorp

What is this test?

The Luteinizing Hormone (LH) Test measures the amount of LH in the blood to help diagnose potential Testosterone deficiency and/or infertility. LH is produced in the pituitary gland and is responsible for triggering the testicles to produce Testosterone in men. In women, LH interacts with another hormone called Follicle-Stimulating Hormone (FSH) to control ovulation and the menstrual cycle.

In men, abnormally low levels of LH can cause infertility and Testosterone deficiency. In women, low levels of LH can cause infertility and potentially signify elevated levels of Estrogen, which can lead to conditions like Polycystic Ovarian Disease and Fibrocystic Breast Disease. High levels of LH and FSH can also indicate the approach of menopause in women and andropause in men.

Who is this test for?

This test is for men and women looking to diagnose potential infertility. This test is also for men who want to measure their LH levels in relation to a possible Testosterone deficiency. The LH test can help point to the cause of conditions related to elevated estrogen levels in women, as well. It can also help identify whether a woman has entered menopause or a man has entered andropause.