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Test Code SQ CA125M, EPIC LAB155 Cancer Antigen 125 (CA 125), Serum

Reporting Name

Cancer Ag 125 (CA 125), S

Useful For

Evaluating patients' response to ovarian cancer therapy


Predicting recurrent ovarian cancer

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type


Specimen Required

Patient Preparation: 12 hours before this blood test do not take multivitamins or dietary supplements containing biotin (vitamin B7) which are commonly found in hair, skin, and nail supplements and multivitamins.


Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 0.6 mL

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 5 days
  Frozen  180 days

Reference Values

Females: <46 U/mL

Males: Not applicable

Day(s) and Time(s) Performed

Monday through Friday; 5 a.m.-12 a.m.

Saturday; 6 a.m.-6 p.m.

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
CA25 Cancer Ag 125 (CA 125), S 83082-8


Result ID Test Result Name Result LOINC Value
CA25 Cancer Ag 125 (CA 125), S 83082-8

Reject Due To


Mild OK; Gross OK


Mild OK; Gross OK





Method Name

Electrochemiluminescent Immunoassay