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Napsin A, IHC without Interpretation
Test Code90221
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 (IHC)
Setup Schedule
Set up: Mon-Fri; Report available: Next day
Clinical Significance
Napsin A, a pepsin-like proteinase, is highly expressed
in lung alveolae (type II pneumocytes), as well as most
adenocarcinomas of the lung, but rarely in other
carcinomas.
in lung alveolae (type II pneumocytes), as well as most
adenocarcinomas of the lung, but rarely in other
carcinomas.
