Inhibin B

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Inhibin is a hormone that is produced by both men and women. While women have both Inhibin A and B, men only produce Inhibin B.

What is the Inhibin B test?

The inhibin B test is one of the two inhibin tests performed to detect the level of hormones in the blood.

  • Inhibin B is produced by cells in the ovarian follicles.
  • Inhibin B suppresses the effects of follicle-stimulating hormone (FSH) hormone. So, high levels of it are of concern.
  • When the inhibin B levels are in the normal range, it indicates high chances for the woman to get pregnant.

Why is an Inhibin B test suggested?

Detecting the levels of inhibin B is important in both men and women:

  • It helps to detect ovarian reserves in women and fertility in men.
  • It helps to detect if a newborn child’s reproductive organs are functioning normally.
  • It is useful in women with polycystic ovarian disease (PCOD) and polycystic ovarian syndrome (PCOS).

How is an Inhibin B test performed?

Using an immunoassay method, the Inhibin B test is performed in the following steps:

  • The area on the forearm where the blood will be drawn is cleaned using an antiseptic.
  • An elastic band is tied right above the area of the intended puncture.
  • Blood is drawn from a vein using a needle and a syringe.

What are the parameters measured in the Inhibin B test?

  • Low inhibin B levels indicate a lesser chance of getting pregnant.
  • Low levels also mean less ovarian reserve in a few women.
  • Low levels in men indicate a poor functioning of the testicles.

Preparation before performing an Inhibin B test

There is no preparation needed for an inhibin B test.

Post-care after the Inhibin B test

After an inhibin B test, no post-care measures are needed.

Sample types in the Inhibin B test

For an Inhibin B test, a blood sample is needed.

Side effects/risks of the Inhibin B test

There are no major risks involved with an inhibin B test. Some minor risks include

  • Fainting
  • Dizziness
  • Excessive bleeding.
  • Infection at the puncture site.

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