Indicator Explainer
Inhibin B
Inhibin B, consisting of an alpha subunit and a beta B subunit linked by disulphide bonds, is a heterodimer hormone produced by the follicle cells of the ovary and by the Sertoli and Ledig cells of testis. Although other forms of inhibin also exist in men, inhibin B is the predominant form in the circulation in men.
This page explains what the indicator is and how results are interpreted in general terms. Reference ranges depend on the laboratory, the method, and your own situation — no single “normal value” applies to everyone. This page is health information, not a diagnosis. For symptoms, treatment, or urgent concerns, contact a healthcare professional.
When it is tested
Source: National Cancer Institute, NCI Thesaurus 26.09d, C2278. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-19. No individual clinical interpretation or human reviewer is asserted.
Reading results
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also Known As
References
- NCI Thesaurus 26.09d — Inhibin B (C2278)
- Source: National Cancer Institute, NCI Thesaurus 26.09d, C2278. NCI definition, reproduced without modification under CC BY 4.0.
- Serum Inhibin B and Cardiometabolic Profile in Adult Men: A Cross-Sectional Study. — Metabolites, 2026-09-01 (PMID 42783764; literature)
- [The value of serum anti-Müllerian hormone and inhibin-B levels for evaluating ovarian function in children with Turner syndrome]. — Zhongguo Dang Dai Er Ke Za Zhi, 2026-08-01 (PMID 42608306; literature)
- Inhibin B as a biomarker for ovarian reserve and ovarian response: systematic reviews and meta-analyses of diagnostic test accuracy. — Gynecol Endocrinol, 2026-10-10 (PMID 42858260; literature)
- Inhibin-Mediated Regulation of Folliculogenesis and Litter Size in Small Ruminants and Non-Ruminants. — Biology (Basel), 2026-10-13 (PMID 42939432; literature)