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What is this test?

The 17-Hydroxycorticosteroids (17-OHCS) in Amniotic Fluid test measures the amount of cortisol metabolites in the amniotic fluid. Cortisol is a hormone produced by the adrenal glands that plays a crucial role in metabolism, stress response, and fetal development. This test evaluates how well the fetal adrenal glands are functioning by measuring the breakdown products of cortisol that pass into the amniotic fluid.

Why is it performed?

This test is primarily performed to assess fetal adrenal gland function. It may be ordered when healthcare providers need to evaluate fetal well-being in high-risk pregnancies, such as those with suspected fetal growth restriction, preeclampsia, or when there are concerns about fetal adrenal development. The test can help detect conditions affecting the fetal adrenal glands, including adrenal insufficiency or certain genetic disorders that impact cortisol production.

How is the sample collected?

The sample is collected through a procedure called amniocentesis. During this procedure, a thin needle is inserted through the abdominal wall into the uterus to withdraw a small amount of amniotic fluid. The procedure is typically performed under ultrasound guidance to ensure safety. Although amniocentesis carries a small risk of complications (such as infection or miscarriage), it is considered a safe procedure when performed by experienced healthcare providers.

What do the results mean?

Abnormal levels of 17-hydroxycorticosteroids in amniotic fluid may indicate fetal adrenal gland dysfunction. Low levels might suggest adrenal insufficiency or underdeveloped adrenal glands, while very high levels may indicate conditions causing excessive cortisol production. Your healthcare provider will interpret the results in conjunction with other clinical findings, ultrasound results, and the overall pregnancy status to determine appropriate management.