ARUP's Laboratory Test Directory

CYFRA 21-1 (Cytokeratin 19 Fragment), Serum : 0081344
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Additional Technical Information
  


Mnemonic: CYFRA

Methodology: Quantitative Enzyme-Linked Immunosorbent Assay
Performed: Tue
Reported: 1-8 days
Specimen Required: Collect: Plain red or serum separator tube.

Specimen Preparation: Allow serum specimen to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Plasma. Icteric, lipemic, or hemolyzed specimens.

Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 2 months (avoid repeated freeze/thaw cycles)
Reference Interval:
0.0-2.3 ng/mL
Interpretive Data: This assay is performed using the Fujirebio Diagnostics CYFRA 21-1 Enzyme Immunoassay. Results obtained with different assay methods or kits cannot be used interchangeably. Results cannot be interpreted as absolute evidence of the presence or absence of malignant disease.
CPT Code(s): 86316
Cross References: CYFRA 21-1 (Cytokeratin 19 Fragment (CYFRA 21-1), Serum), Soluble Cytokeratin 19 Fragment (Cytokeratin 19 Fragment (CYFRA 21-1), Serum)