Prostein, IHC without Interpretation

Test Code
91320

CPT Codes
88342

Preferred Specimen
1 formalin-fixed, paraffin-embedded tissue block

Minimum Volume
1 Block

Other Acceptable Specimens
3 unstained, (+) charged slides, submitted in IHC Specimen Transport Kit

Transport Container
IHC Specimen Transport Kit

Transport Temperature
Room temperature

Specimen Stability
Room temperature: Indefinite
Refrigerated: Indefinite
Frozen: Unacceptable

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

Methodology
Immunohistochemistry (IHC)

Setup Schedule
Setup: Mon-Fri a.m.; Report available: Next day

Reference Range
See Laboratory Report

Clinical Significance
A cytoplasmic marker of prostate epithelium; prostein (p501s) is positive in 85-90% of metastatic carcinomas of prostatic origin. This antibody, in combination with PSA, can be used to sensitively and specifically detect metastatic prostate cancer.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153




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.