CA 19-9

Message

For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.

Test Code

C199

Alias/See Also

4698;
Cancer Antigen 19-9;

CPT Codes
86301

Preferred Specimen

serum

Minimum Volume

1 mL

Instructions

Avoid hemolysis. Allow to clot in an upright position for 30 minuties. Centrifuge 10 minutes. Keep tightly stoppered.

Transport Container

Original tube preferred, may be sent in a screw-top transfer tube.

Transport Temperature

Refrigerated

Specimen Stability

Room Temperature = 8 hours
Refrigerated = 4 days
Frozen = n/a

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolysis, Lipemia, incorrect specimen type, insufficient sample volume, improper storage conditions, exceeds specimen stability guidelines, contaminated sample.

Methodology
immunoassay

Setup Schedule

Daily
TM

Report Available

1 day

Clinical Significance

A large percentage of patients with gastrointestinal tumors (such as pancreatic, liver, gastric, colorectal tumors) and some other malignancies have been shown to have elevated serum CA 19-9 levels. Serum CA 19-9 levels may be useful for monitoring disease activity or predicting relapse following treatment. CA 19-9 should not be used as a screening test.

Performing Laboratory
Compunet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439

Last Updated: November 19, 2021

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.