CA 19-9

Detects a tumor-associated carbohydrate antigen expressed in pancreatic, biliary, gastric, and colorectal adenocarcinomas. Useful for tumor identification, prognosis, and monitoring treatment response.

Synonyms
Carbohydrate Antigen 19-9
Turnaround Time
24 Hrs
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 but not in direct contact with specimen. Not suitable for freeze & hold option.

CPT Codes
88342x1 or 88341x1