Test Code C199 CA 19-9
Specimen Type
Plasma
Container/Tube
Li-Heparin, Mint Green Top
Offsite Collection Instructions
1. Collect sample following standard collection methods
2. Within 2 hours of collection the sample must be spun and
aliquoted
3. Transport refrigerated (2 – 8˚C).
Turnaround Time
4 hours
Test Includes
N/A
Preferred Volume
0.5 mL
UCMC Collection Instructions
1. Collect sample following standard collection methods
2. Within 2 hours of collection the sample must be received in
Laboratory Service Center
3. Transport room temperature (15 – 25˚C).
STAT Turnaround Time
N/A
Test Usage
Immunoassay for the in vitro quantitative determination of CA 19-9 tumor associated antigen, in human serum and plasma. The assay is indicated for the serial measurement of CA 19-9 to aid in the management of patients diagnosed with cancers of the exocrine pancreas. The test is useful as an aid in the monitoring of disease status in those patients having confirmed pancreatic cancer who have levels of CA 19-9 at some point in their disease process exceeding the median concentration determined for the apparently healthy cohort.
Critical Results
N/A
Test Limitations
The measured CA 19-9 value of a patient’s sample can vary depending on the testing procedure used. CA 19-9 values determined on patient samples by different testing procedures cannot be directly compared with one another and could be the cause of erroneous medical interpretations.
Patients known to be genotypically negative for Lewis blood group antigens will be unable to produce the CA 19-9 antigen even in the presence of malignant tissue. Phenotyping for the presence of the Lewis blood group antigen may be insufficient to detect true Lewis antigen negative individuals. Even patients who are genotype positive for the Lewis antigen may produce varying levels of CA 19-9 as the result of gene dosage effect.
Fee Code
30086301
Stability: Room Temp
2 hours
Stability: Refrigerated
5 days
Stability: Frozen
3 months
Specimen Minimum Volume
0.2 mL
DAY(S) AND TIME(S) PERFORMED
24 hours, 7 days a week including holidays.
STAT DAY(S) AND TIME(S) PERFORMED
N/A
CPT
86301
Method Name
Electrochemiluminescence Immunoassay (ECLIA)
Reference Values
< 37 U/mL
Reject Due To
Whole blood/unspun samples greater than 6 hours will be rejected.
Synonyms
N/A
Additional Information
N/A
Included in Additional codes
N/A
Coverage Information
N/A