CPT® Code 86336

The CPT® Code 86336 refers to the measurement of inhibin A levels through a blood test. Inhibin A is a heterodimeric protein hormone that plays a significant role in reproductive health. It is secreted by granulosa cells in the ovaries of females and Sertoli cells in the testes of males. Additionally, during pregnancy, inhibin A is produced by the placenta. The levels of this hormone can fluctuate normally during specific phases of the female menstrual cycle and may also elevate during pregnancy. However, abnormal elevations of inhibin A can indicate various medical conditions, such as ovarian tumors, specifically granulosa cell tumors and epithelial mucinous-type tumors, as well as congenital abnormalities in the fetus, such as Down Syndrome. Furthermore, elevated levels may be associated with pregnancies complicated by preeclampsia. In clinical practice, when assessing fetal or pregnancy-related issues, the inhibin A test is often conducted alongside other tests, including alpha-fetoprotein (AFT), human chorionic gonadotropin (hCG), and Estriol, to provide a comprehensive evaluation. The blood sample for this test is obtained through venipuncture, which is a separately reportable procedure, and the serum is analyzed using quantitative chemiluminescent immunoassay techniques.