Inhibin A
- Sample Type
- Standard
- Fasting
- No
- Unit
- pg/mL
Inhibin A is a peptide hormone produced by the granulosa cells of the ovary. In the context of an Ovarian Cancer Panel, it serves as a serum tumor marker specifically for Granulosa Cell Tumors (GCT) and some mucinous epithelial ovarian cancers. It is also used in prenatal screening (Quad Screen) to assess the risk of Down Syndrome, but its oncology application is focused on monitoring disease recurrence and treatment response.
Check Your Result
Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Inhibin A levels vary significantly based on the menstrual cycle (peaking at mid-cycle and the luteal phase) and menopausal status. Elevated levels can also be seen in pregnancy or in benign conditions like polycystic ovary syndrome (PCOS). Results must be interpreted in the context of imaging and other markers like CA-125.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Inhibin A:
Official Sources
- Inhibin B in Infertility - Testing.comTesting.com
Research & Guidelines
- PubMed: Inhibin A Clinical GuidelinesNCBI / PubMed
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
Get Notified When Dr. Babu Is Available