Days Set Up
Daily, 24 hours
Analytic Time

4 hours

MiChart Code
CA 125
Soft Order Code
CA125

Test Updated:

Synonyms

Cancer Antigen 125
DM70K Replacement Assay
Ovarian Cancer Tumor Marker
CA125
CA 125

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All specimens should be accompanied by a requisition.

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MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Chemiluminescent Immunoassay (CLIA)

Test Usage

Follow-up management of patients undergoing cancer therapy, especially for ovarian carcinoma. Consistently rising CA 125 results may be associated with malignant disease and poor response to therapy; declining values may be indicative of a favorable response to therapy.

Reference Range

0 - 35.0 U/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Collect specimen in an SST or red top tube. Refrigerate and send intact specimen within 8 hours of collection. Alternatively, centrifuge, aliquot serum into a plastic vial and refrigerate up to 48 hours or freeze for longer storage.

Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum

Billing Information

CPT Code
86304
Pro Fee Code
 
LOINC
10334-1

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.

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