Inhibin-A

Label Mnemonic:	INHBA
Epic code:	LAB3421
Downtime form:	A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

Commercial Mailout Laboratory
6240-8 RCP
356-8593

Specimen(s):

Serum

Specimen Instructions:

Fasting specimens are recommended, but not required.

Collection Medium:

Red top tube 5 mL (Clot Activator)

Minimum:

Preferred minimum:  1.0 mL serum
Absolute minimum:   0.5 mL serum

Rejection Criteria:

Plasma and severely lipemic or hemolyzed samples.

Delivery Instructions:

Submit specimen to laboratory as soon as possible after collection period is completed.

Turn Around Time:

1-2 days upon receipt at reference laboratory

Reference Range:

Age/Phase                               Inhibin A pg/mL
Normal Cycling Females:                 Normal Cycling Females:
  Early Follicular Phase (-14 to -10)     1.8-17.3 pg/mL
  Mid Follicular Phase (-9 to -4)         3.5-31.7 pg/mL
  Late Follicular Phase (-3 to -1)        9.8-90.3 pg/mL
  Mid Cycle (Day 0)                       16.9-91.8 pg/mL
  Early Luteal (1 to 3)                   16.1-97.5 pg/mL
  Mid Luteal (4 to 11)                    3.9-87.7 pg/mL
  Late Luteal (12 to 14)                  2.7-47.1 pg/mL

IVF-Peak Levels                         354.2-1690.0 pg/mL
PCOS-Ovulatory                          5.7-16.0 pg/mL
Postmenopausal                          less than 6.9 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.

Methodology:

Quantitative Chemiluminescent Immunoassay

CPT Code:

86336