FSH (follicle-stimulating hormone)
A hormone that stimulates the growth of ovarian follicles, produced naturally by the pituitary gland and also given as an injectable medication during stimulation.
In plain English
It's the hormone that tells your ovaries to grow follicles, both naturally and as one of the main injections used in IVF stimulation.
Why it matters
A baseline FSH blood test can add to the picture of ovarian reserve, and injectable FSH forms the backbone of most stimulation protocols.
Related terms
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