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APCK19
CK19, IMMUNOHISTOCHEMISTRY STAIN

Test Code APCK19 
Test CK19, IMMUNOHISTOCHEMISTRY STAIN 
Description Cytokeratin 19 may be useful in the differential diagnosis of thyroid neoplasms. Papillary thyroid cancers are strongly positive for this marker. CK19 reacts with many benign and malignant epithelial lesions. Malignant breast tumors and other epithelial tumors show positive homogeneous staining. Cervical squamous cell carcinomas, keratinizing and non-keratinizing, as well as adenocarcinomas of the cervix are strongly positive.

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 provided. 
Analytic Time 2 Days 
Day(s) Test Set Up Monday through Friday 
CPT Code(s) 88342