Inhibin B

Test Code

34445

Alias/See Also

LAB00225

CPT Codes
83520

Preferred Specimen

1 mL serum

Minimum Volume

0.5 mL

Transport Container

Transport tube

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 28 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolysis • Lipemia • Icteric sample

Methodology
Chemiluminescence (CL)

FDA Status
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.

Setup Schedule

Tue,Thur,Sat

Reference Range

	Male	Female
≤4 Years	Not established	Not established
5-9 Years	21-166 pg/mL	≤18 pg/mL
10-13 Years	41-328 pg/mL	≤86 pg/mL
14-17 Years	54-295 pg/mL	≤123 pg/mL
≥18 Years	47-308 pg/mL

Female	≥18 Years
Pre-menopausal	<153 pg/mL
Post-menopausal	<10 pg/mL

Values obtained from different assay methods cannot be used interchangeably. Inhibin B levels, regardless of value, should not be interpreted as absolute evidence of the presence or absence of disease.

Clinical Significance

Inhibin B is the major circulating inhibin in males. It is also detectable in women during menstrual cycles, particularly prior to ovulation. The measurement of inhibin B serves as an endocrine marker for monitoring male and female gonadal function.

Performing Laboratory

Quest Diagnostics Nichols Institute-San Juan Capistrano, CA

33608 Ortega Highway

San Juan Capistrano, CA 92675-2042

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.