Evaluate your luteinizing hormone level with an LH blood test.

Luteinizing hormone (LH) is a protein produced by the pituitary gland that has a vital role in reproductive health. LH supports testosterone production in men and triggers ovulation (egg release) from the ovary in women. Monitoring LH levels may offer insights into your reproductive health and may help with tracking ovulation patterns.

Results will vary depending on factors such as sex, age, menstrual cycle phase and if you are taking certain medications (such as hormone therapy). Abnormal levels, either high or low, might indicate an underlying hormonal imbalance or other health condition. Changes in levels can sometimes help to explain symptoms such as irregular periods, low libido or hot flashes.

Note: This test does not diagnose or determine the cause of infertility, menstrual irregularities or any health condition. LH is often evaluated in the context of other hormones such as follicle-stimulating hormone (FSH). This test provides a snapshot of your hormone level at the time of testing; you will receive test results a few days after the sample is collected. It is recommended to consult with a healthcare provider if you have any questions about your result.