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Inhibin B : 34445
Test CodeINHIBQ or 34445
CPT Codes
83520
Instructions
Serum separator tube or plain red.
Transport Container
Centrifuge the serum separator tube and transport. If plain red, centrifuge and aliquot 1 mL serum (Min: 0.5 mL) into a standard transport tube.
Transport Temperature
Refrigerated.
Specimen Stability
Ambient: 72 hours ; Refrigerated: 7 days; Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis; icteric; lipemia.
Methodology
Chemiluminescence
Setup Schedule
Tuesday & Thursday & Saturday
Report Available
3-5 days (From receipt at performing laboratory)
Limitations
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Reference Range
| Male Female 5-9.9 years 21-166 pg/mL less than or equal to 18 pg/mL 10-13.9 years 41-328 pg/mL less than or equal to 86 pg/mL 14-17.9 years 54-295 pg/mL less than or equal to 123 pg/mL >=18 years 47-308 pg/mL Females Pre-menopausal less than 153 pg/mL Post-menopausal less than 10 pg/mL |
Clinical Significance
Inhibin-B is the major circulating inhibin in males and can be used as endocrine marker of spermatogenesis in subfertile men. In the female, since Inhibin-B decreases to undetectable levels after normal menopause, certain ovarian cancers (mucinous carcinomas, granulosa cell tumors) continue to produce inhibin after menopause, Inhibin-B can serve as a regular screening test in the female, especially in post-menopausal women.
Performing Laboratory
Quest Diagnostics
