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Cancer Antigen 125

Message
CA125 antigen levels have no proven prognostic value when used for either screenign or at time of diagnosis.  However, CA125 antigen levels do correlate with patient status after initial treatment.  The levels may be used as an aid in monitoring the response to therapy for patients with epithelial ovarian carcinoma.


Test Code
CA125


Alias/See Also
LAB3060031
CA125
 


CPT Codes
86304

Preferred Specimen
2.0 mL serum collected in a gold serum separator tube (SST)


Minimum Volume
0.5 mL serum


Other Acceptable Specimens
2.0 mL serum collected in an orange rapid clot serum separator tube (RCT)


Specimen Stability
Store centrifuged samples tightly stoppered at room temperature 15 - 30oC for no longer than eight hours.  If the assay will not be completed within eight hours, refrigerate the samples at 2 - 8oC.  If the assay will not be completed within 48 hours, or for shipment of samples, freeze serum at -20oC or colder.


Methodology
Two-site immunoenzymatic ("sandwich") assay

Reference Range
 
Sex Age Reference Range
M/F 0 - 150 years 0 - 35 U/mL


Performing Laboratory
Penn Medicine Lancaster General Health



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.