CA 19-9
Test code
CPT code(s)*
Test resources
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Details
Methodology
Immunoassay (IA)
Alternative name(s)
Carbohydrate Antigen 19-9,Cancer Antigen 19-9
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | 1 mL serum |
| Minimum volume | 0.5 mL |
| Transport container | Serum separator tube (SST) |
| Transport temperature | Room temperature |
| Specimen stability | Room temperature: 7 days |
Reference Range(s)
<34 U/mL
This test was performed using the Siemens chemiluminescent method. Values obtained from different assay methods cannot be used interchangeably. CA 19-9 levels, regardless of value, should not be interpreted as absolute evidence of the presence or absence of disease.
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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