Posted Date
Effective Date
Update Type New Tests
CPT Code 86160
Order Code FC4AL
Referral Laboratory Mayo Medical Laboratories



C4a Level

Order Code:                              FC4AL

CPT Code:                                86160

Reference Laboratory:   Mayo Medical Laboratories


Effective April X, 2021 MLabs will offer the C4a Level (FC4AL) test via Mayo Medical Laboratories.


Collection Instructions: Collect 6 mL of whole blood in a lavender top vacutainer. Centrifuge immediately after collection. Aliquot the plasma into a plastic vial and freeze. Ship specimen frozen.


Methodology: Radioimmunoassay


Analytic Time: 21-44 days


Reference Range: 0 - 2830 ng/mL