| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Napsin A, IHC without Interpretation
Test Code90221
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
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.
Performing Laboratory
| Quest Diagnostics Nichols Institute |
| 14225 Newbrook Drive |
| Chantilly, VA 20153 |
