The LH test measures the amount of LH in the blood or urine. If your LH levels are high, it could mean a number of things. For example, high levels of LH are normal if you’re in menopause.
However, if you’re younger than 40, high LH levels could suggest:
Premature menopause.
Polycystic Ovary Syndrome (PCOS)
A genetic or congenital condition that affects the production of hormones.
High levels at times outside of the LH surge can interfere with ovulation and menstruation, contributing to infertility.
If your LH levels are low, you may not be getting your period. Because LH triggers ovulation, low levels of LH can prevent ovulation, and thus pregnancy.
Low levels of LH are common in:
Women with eating disorders.
Female athletes.
Women with high levels of stress.
Disorders of the pituitary gland or hypothalamus.
LH testing is usually done in conjunction with other hormone tests, such as FSH, testosterone, estradiol, and progesterone. The results of these other tests will help determine the next steps in your fertility treatment.
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