What is an inhibin B test for?
Inhibin B is a hormone associated with reproduction and the development of eggs in women and sperm in men. This test measures the inhibin B level in the blood and may be used as part of an infertility evaluation.
What is normal inhibin B level?
The normal range of inhibin in post-menopausal women is < 5 pg ml-1, in pre-menopausal women 2-80 pg ml-1 (2-10 pg ml-1 in the follicular phase, 40-80 pg ml-1 in the luteal phase).
What does the hormone inhibin do?
Inhibin is a protein secreted by the Sertoli cells in men and by the granulosa cells in women. It inhibits the synthesis and release of the follicle-stimulating hormone in the pituitary gland and reduces the hypothalamic LH – releasing hormone content.
Does high inhibin A always mean Down syndrome?
Results: The mean inhibin A multiple of the median was significantly higher in the Down syndrome group than in the euploid group (2.84 +/- 2.0 vs 1.22 +/- 1.0, p = 0.0001). An inhibin A level > or = 1.6 multiples of the median identified 70% of all Down syndrome pregnancies at a false-positive rate of 22%.
What does high inhibin A mean?
High levels of maternal serum inhibin-A in the second trimester are significantly associated with abnormal placentation, which increases the risk of preeclampsia and FGR with a consequence of indicated preterm birth but not a risk of spontaneous preterm birth.
What is the function of inhibin B?
Inhibin B is secreted by antral follicles in response to FSH, and is the major marker of follicular growth. Thus, inhibin B level is a marker of ovarian function, which may become a useful tool to identify the potential ovarian responsiveness to ovulation induction.
What is a normal inhibin A level?
The Inhibin A normal range varies for men and women and for postmenopausal and premenopausal women. The Inhibin A normal range for men across all age groups is < 2pg/ml.
What is the role of inhibin?
Inhibin plays an important role in a woman’s fertility. Inhibin plays a role in the aging process. During ovulation, and the mid-follicular phase, inhibin B is produced, and during the mid-luteal phase, more inhibin A is secreted.
What does inhibin do?
Inhibin is an endocrine hormone that’s produces in the testes. Inhibin is involved in fetal development. Inhibin plays an important role in a woman’s fertility.
What does inhibin mean?
Definition of inhibin : a glycoprotein hormone that is secreted by the pituitary gland and in the male by the Sertoli cells and in the female by the granulosa cells and that inhibits the secretion of follicle-stimulating hormone