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p40, IHC without Interpretation
Test Code92290
CPT Codes
88342
Preferred Specimen
Formalin-fixed, paraffin-embedded block submitted in an IHC specimen transport kit
Minimum Volume
3 slides
Other Acceptable Specimens
5 unstained, positively (+) charged slides
Instructions
Do not reject
Transport Temperature
Room temperature
Specimen Stability
Paraffin block
Room temperature: 5 years
Refrigerated: 5 years
Frozen: Unacceptable
Slides
Room temperature: 45 days
Refrigerated: 45 days
Frozen: Unacceptable
Room temperature: 5 years
Refrigerated: 5 years
Frozen: Unacceptable
Slides
Room temperature: 45 days
Refrigerated: 45 days
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
No tumor in blocks or slides
Methodology
Immunohistochemistry
Setup Schedule
Set up: Daily; Report available: 1-2 days
Reference Range
See Laboratory Report
Clinical Significance
Recognizes an isoform of p63 reported to be highly specific for squamous and basal cells, especially useful in distinguishing pulmonary squamous cell carcinoma from adenocarcinoma.
