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What is Luteinizing Hormone (LH)?

by len king on Dec 11, 2023

Produced by your pituitary gland, luteinizing hormone (LH) is vital for reproduction. LH helps regulate your menstrual cycle and ovulation. A rise in LH — called the LH surge — triggers ovulation.
Why Would I Have My LH Levels Checked?
Your LH levels can be used to determine when you’re ovulating. This information can help you plan out when to have intercourse with your partner if you’re trying to become pregnant.
If you’re having trouble becoming pregnant, you’ll probably have your LH levels checked. When measured along with FSH and estradiol, your LH gives your fertility doctor information about your ovarian reserve.
If you’re not ovulating, your LH levels can help determine the cause. For example, LH is typically elevated in patients with Polycystic Ovarian Syndrome (PCOS).

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