IHC

Keratin 8 (CK8)

Identifies a type II intermediate filament protein expressed in simple epithelia and their corresponding carcinomas. It is present in most glandular and ductal epithelial tissues, including liver, pancreas, lung, breast, and gastrointestinal tract. CK8 is commonly used to detect epithelial differentiation in tumors and distinguish carcinomas from non-epithelial neoplasms.

Full Description

Identifies a type II intermediate filament protein expressed in simple epithelia and their corresponding carcinomas. It is present in most glandular and ductal epithelial tissues, including liver, pancreas, lung, breast, and gastrointestinal tract. CK8 is commonly used to detect epithelial differentiation in tumors and distinguish carcinomas from non-epithelial neoplasms.

Methodology

IHC

Specimen Requirements

Tissue Block: Formalin-fixed, paraffin-embedded (FFPE) tumor block preferred. Unstained Slides: Recommended 2 charged slides per stain requested (minimum of 1 slide per stain), baked or unbaked. Fixation: Tissue must be fixed in 10% neutral buffered formalin for 6–72 hours.

Storage and Transportation

Use cold pack for transport. Make sure cold pack is not indirect contact with specimen.

Turnaround Time

24 Hrs

CPT Codes

88342x1 or 88341x1