f your LH levels are high, it could mean a number of things. High levels of LH are normal if you are in menopause. If you are younger than 40, high LH levels could suggest premature menopause, polycystic ovary syndrome (PCOS), or 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 will usually not be having 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 athlete triad, high levels of stress and disorders of the pituitary 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 next steps.