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APCK20
KERATIN 20, IMMUNOHISTOCHEMISTRY STAIN

Test Code APCK20 
Test KERATIN 20, IMMUNOHISTOCHEMISTRY STAIN 
Description Useful in the differentiation of certain carcinomas (adenocarcinoma of the stomach, colon, biliary tract, mucinous ovarian tumors, Merkel cell carcinomas, and transitional cell carcinoma).

NOTE: This test is usually ordered in conjunction with a pathology consultation. The pathology professional component will be billed separately by the consulting pathologist. 

Specimen Formalin-fixed or paraffin-embedded tissue specimen. 
Reference Values An interpretive report will be issued. 
Analytic Time Monday through Friday 
Day(s) Test Set Up 2 Days 
CPT Code(s) 88342