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HelpTest Code CA25 Cancer Antigen 125 (CA 125), Serum
Specimen Required
Patient Preparation: For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
CMH COLLECTION: 2 mL in red gel vacutainer
Specimen Minimum Volume
0.75 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 5 days |
| Frozen | 168 days |
Useful For
Evaluating individuals' response to ovarian cancer therapy
Predicting recurrent ovarian cancer
This test is not useful for cancer detection screening in the normal population.
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
Day(s) Performed
Monday through Friday
Report Available
1 to 3 daysReporting Name
Cancer Ag 125 (CA 125), SReference Values
Males: Not applicable
Females: <46 U/mL
Method Name
Electrochemiluminescent Immunoassay (ECLIA)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86304