Test Code CA19-9 Carbohydrate Antigen 19-9 (CA 19-9)

Important Note

Values obtained with different assay methods cannot be used interchangeably

Memorial Hospital Laboratory- Automated Procedures	304-388-5953
Teays Valley Hospital Laboratory	304-757-1770

Plasma-Mint Green, Dark Green Lithium Heparin or Serum-SST gold top, red top

Allow SST or red top to completely clot

Spin and physically separate plasma/serum from contact with cells as soon as possible

4 mL of plasma/serum (minimum 2 mL)

0.0-40.0 U/mL

Chemiluminescent two-site immunoenzymatic sandwich assay on Beckman Coulter DxI

The assay is not used as a screening tool, but may be used as an aid in monitoring the response to therapy

Monday through Sunday, Continuously

AM Collection	Expected by 9AM same day
Routine	Expected within 24 hrs
Stat	Expected within 1 hr
Timed	Expected results are test dependant

86301