Carbohydrate Antigen 19-9 (CA 19-9), Serum

Test Code:  CAG199
Assay Schedule:  Tu, F
Reporting Schedule:  within 4 days of receipt in lab
CPT:  86301

Collection

Specimen(s):
  • Serum or Plasma

Acceptable Container(s):
  • Clot Activator (red top)
  • SST gel (red top)
  • K3 EDTA (lavender top)
  • Trace Elements Sodium Heparin (royal blue top)
  • Lithium Heparin (green top)

Volume:
  • Preferred: 1.0 mL
  • Minimum: 0.5 mL

Stability:
  • Ambient: Unacceptable
  • Refrigerated: 1 week
  • Frozen: 1 month

Processing & Shipping

Specimen Processing:
Allow red top to clot for 20-30 minutes. Centrifuge tubes immediately and separate serum or plasma into transport tube.

Shipping Instructions:
Ship refrigerated

Special Instructions:
Previously known as Cancer Antigen 19-9

Rejection Criteria:
Hemolyzed and ambient specimens are unacceptable.

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