Patient Prep: Fasting specimens are recommended, but not required.
Collect: Serum separator tube.
Specimen Preparation: Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Storage/Transport Temperature: Refrigerated.
Unacceptable Conditions: Plasma. Hemolyzed or severely lipemic specimens.
Stability (collection to initiation of testing): After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval:
Age/ Phase
Inhibin A (Dimer) pg/mL
Normal Cycling Females:
Early Follicular Phase (-14 to -10) Mid Follicular Phase (-9 to -4) Late Follicular Phase (-3 to -1) Mid Cycle (Day 0) Early Luteal (1 to 3) Mid Luteal (4 to 11 ) Late Luteal (12 to 14)
354.2-1690.0 pg/mL 5.7-16.0 pg/mL less than 7.9 pg/mL
Normal males
less than 2.1 pg/mL
Interpretive Data:
This assay is performed using the Beckman Coulter Unicel DxI assay. Values may be elevated during normal pregnancy. Preeclampsia, Down Syndrome, and some cancers may increase Inhibin-A values.
