Test Name: CK20

Methodology: IHC

Test Description

The antibody labels the majority of adenocarcinomas of the colon, mucinous ovarian tumors, transitional-cell and Merkel-cell carcinomas, and frequently adenocarcinomas of the stomach, bile system and pancreas. Most squamous cell carcinomas and most adenocarcinomas from other sites (breast, endometrium, lung, prostate), non-mucinous tumors of the ovary, and small-cell lung carcinomas are essentially or completely negative.

Specimen Requirements

A formalin-fixed, paraffin-embedded (FFPE) tissue block is preferred specimen type or one (1) unbaked, unstained slide cut at 4-5 microns for H&E staining (required) and two to three (2-3) positively charged unstained slides cut at 3-4 microns for each test/antibody ordered.

Storage and Transport

Use cold pack during transport of paraffin blocks and unstained slides. Cold pack should not be placed in direct contact with the specimen during shipping

Specimen Rejection Criteria

Click here to reference the specimen rejection criteria.

Turn Around Time (TAT): 2-3 Days

CPT Codes*: 88341, 88342, 88360

*The CPT codes provided with our Test Descriptions are based on AMA guidelines and are for informational purposes only. Correct CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed.