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Prostein, IHC without Interpretation
Test Code91320
CPT Codes
88342
Preferred Specimen
Formalin-fixed, paraffin-embedded tissue block submitted in an IHC specimen transport kit
Other Acceptable Specimens
3 unstained, (+) positively charged slides
Transport Temperature
Room temperature
Specimen Stability
Room temperature: Indefinitely
Refrigerated: Indefinitely
Frozen: Unacceptable
Refrigerated: Indefinitely
Frozen: Unacceptable
Methodology
Immunohistochemistry (IHC)
Setup Schedule
Setup: Mon-Fri; 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.

