What do LH and FSH tell me about fertility before and during TRT?
I noticed luteinizing hormone and follicle-stimulating hormone on my initial lab report and want to understand what they indicate about fertility and hormone production.
Luteinizing hormone (LH) and follicle-stimulating hormone (FSH) are pituitary hormones that signal the testes to produce natural testosterone and sperm. When evaluating baseline hormone panels, these markers help clinicians determine whether low testosterone stems from primary testicular issues or signals originating in the brain. Once testosterone therapy begins, natural production typically pauses, causing LH and FSH levels to drop significantly, which temporarily impacts natural fertility. If maintaining fertility is a priority for you, it is essential to discuss your family planning goals openly with your prescribing clinician so they can tailor your care plan accordingly.
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