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CD44, IHC without Interpretation
Test Code90199
CPT Codes
88342
Preferred Specimen
Formalin-fixed, paraffin-embedded tissue block
Other Acceptable Specimens
Minimum: 3 unstained, positively charged slides
Transport Container
IHC Specimen Transport Kit
Transport Temperature
Room temperature
Specimen Stability
Room temperature: Indefinitely
Refrigerated: Indefinitely
Frozen: Unacceptable
Refrigerated: Indefinitely
Frozen: Unacceptable
Methodology
Immunohistochemistry
Setup Schedule
Set up: Mon-Fri; Report available: Next day
Clinical Significance
The adhesion molecule, CD44, has been shown to be a marker of the self-renewing stem cell in solid tumors. High level CD44 expression is an adverse prognostic marker in many carcinomas.