Complement, Alternate Pathway, Functional

Message

For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.

Test Code

CMPALT

Alias/See Also

Mayo code AH50

CPT Codes
86161

Preferred Specimen

5 mL Serum from a Red Top tube.

Patient Preparation
Patient should be fasting.

Minimum Volume

0.2 mL

Instructions

Immediately after specimen collection, place the tube on wet ice. Centrifuge at 4 degrees C and aliquot serum into a plastic vial. Freeze specimen within 30 minutes.

Transport Container

Plastic vial

Transport Temperature

Frozen

Specimen Stability

Room Temperature: NA
Refrigerated: NA
Frozen: 14 Days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Serum in a SST

Methodology
Enzyme-Linked Immunosorbent Assay (ELISA)

Report Available

1 - 7 days

Clinical Significance

Investigation of suspected alternative pathway complement deficiency, atypical hemolytic uremic syndrome, C3 glomerulonephritis, dense-deposit disease

Performing Laboratory
MAYO CLINIC LABORATORIES
3050 SUPERIOR DR NW
ROCHESTER, MN 55901

Last Updated: November 19, 2021

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.