Luteinizing Hormone (LH)


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Quest Diagnostics Test Code: 615

This test is used to measure the level of Luteinizing hormones (LH) in the body.

Luteinizing hormone (LH) is one of the sex hormones that helps to stimulate the ovaries to release eggs into the fallopian tube to be fertilized and also stimulates the testicles to produce testosterone, the hormone needed for the production of sperm. LH is produced in the pituitary gland found in the brain. LH is often used in conjunction with other sex and reproductive hormones. LH is tested as part of the effort to determine the cause of infertility, irregular menstruation and other dysfunction of the ovaries and testicles. Irregular levels of LH can also point to pituitary disorders, such as pituitary adenoma. Additionally, LH can be measure as an indication of the stage of the menstrual cycle, as there is an LH surge when ovulation is bound to happen, helping women who are planning pregnancy.

This test is performed in following conditions such as:

• Problems falling pregnant
• Irregular or absent menstrual
• To determine menopause
• In men with a low sperm count
• Suspected pituitary adenoma or disorder
• Delayed puberty

Also Known As: LH


Specimen Collected
  • Blood
Estimated Time Taken

Turnaround time for the Luteinizing Hormone test is typically 1 business day.