Test Directory

Clear All
Test Code
AINHB
Test Name
Inhibin A (Dimer)
CPT Codes
86336
Expected Turnaround Time
3 - 5 days
Clinical Utility

Inhibin A is useful as an indicator of gonadal function, and ovarian response to hMg 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.
Specimen and Container Info

Specimen Type: Serum

Preferred Collection Container: Red Top, Plain

Alternate Collection Container: Gold Top, Serum Separator

Desired Specimen Volume: 2 mL
Collection Instructions
  1. Collect a red top, plain tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells.
  2. Transfer 2 mL of serum to a clear aliquot tube (screw cap)
Transport Instructions

Transport to the laboratory refrigerated. 
Stability Requirements

Room Temperature

14 days

Refrigerated

14 days

Frozen

28 days
Causes for Rejection
  • Gross hemolysis
  • Grossly lipemic
Methodology
Immunoassay
Reference Intervals

 See patient report.
Reference Lab
Quest Diagnostics Nichols Institute
Testing Schedule
Routine, Monday - Saturday
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
© 2026 HNL Lab Medicine. All rights reserved.