Preferred Specimen(s) 1.0 mL Serum
Instruction Specimens should be collected between the 14th and 22nd week of gestation. 15-16 weeks is the optimum time for testing.
Transport Container Plastic Screw cap vial
Transport Temperature Refrigerated 7 days
Reject Criteria
- Gross hemolysis,
- lipemic
Methodology EIA
Clinical Significance: Inhibin A is useful as an indicator of gonadal function, and ovarian response to hCg or to FSH stimulation. Inhibin A, produced by the placenta, is used along with other maternal serum biochemical markers to improve sensitivity of the screen for Down syndrome risk.