LH is a pituitary hormone. In men, it’s the signal that tells the testes to make testosterone. In women, it triggers ovulation.
For men with low testosterone, LH helps find the cause. If LH is high, the testes aren’t responding (primary hypogonadism). If LH is low or normal, the signal from the brain may be the issue (secondary hypogonadism). That difference changes the workup and the treatment options.
At Serene Med Spa in Hudson, Ohio, every hormone and wellness plan starts with Labcorp lab work reviewed by a board-certified physician.
High LH in men usually means the testes aren’t making enough testosterone despite a strong signal. In women, LH rises around ovulation and after menopause.
Low LH can point to a pituitary or hypothalamus problem, and can also be seen with stress, extreme exercise, being underweight or outside testosterone use.
Normal ranges vary by lab, age and sex. Your physician reads every result together with your symptoms, history and other tests.
No fasting is needed. If you take biotin (vitamin B7) or a hair, skin and nail supplement, tell us first. The FDA warns that high-dose biotin can interfere with some lab tests, including hormone and thyroid tests.
It shows whether low testosterone starts in the testes or in the brain, which guides further testing and treatment.
Yes. Outside testosterone signals the brain to reduce LH, which is why LH is interpreted with your treatment history.
Sometimes, mostly to evaluate cycles, ovulation or menopause.
Book a hormone and wellness consultation at Serene Med Spa in Hudson, OH. We’ll review your symptoms, order the right panel and walk you through every result.
Book a ConsultationSources: MedlinePlus: Luteinizing Hormone (LH) Levels Test · AUA testosterone deficiency guideline (Mulhall et al., 2018). This page is for general education and is not medical advice. Tests are ordered only after a consultation with a licensed provider.
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