CARCINOEMBRYONIC ANTIGEN (CEA), FLUID

Test Name

Aliases

Abbreviations

Test Classification

GROUPED TEST

Department

SPECIAL CHEMISTRY

Sub Department

TAT Category

ELAPSED (CONTINUOUS) TIME

Estimated TAT

TAT Units

HOURS

Test Requirements

Fluid type: various e.g. pleural, peritoneal, pericardial fluid, or pancreatic/other cyst aspirates. Specify fluid type on requisition. Record collection date/time. Volume: 1-2 mL in sterile container without preservative. Stability: Room temperature: Stable 8 hours; Refrigerated (2-8°C): Stable 2-7 days; Frozen (-20°C or below): Stable 6 months Avoid repeated freeze-thaw cycles Shipping: Ship refrigerated (2-8°C) with cold packs if tested within 2-7 days; Ship frozen if longer transport time is expected.

Clinical Utility

Carcinoembryonic antigen (CEA) measured in body fluids (pleural, peritoneal, pericardial, cyst fluid) helps distinguish malignant from benign effusions. Elevated levels suggest malignancy, particularly adenocarcinomas (GI, lung, breast, ovarian). Also useful for differentiating mucinous from non-mucinous pancreatic cysts.

Last Review

26th Feb 2026