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Labcorp Oklahoma, Inc.
Test Directory


Index:

Complement Panel (C3, C4, CH50)

Order Name COMPL IDL
Test Number: 5570450
Revision Date 02/05/2018
Test Name Methodology LOINC Code
Complement C3, Serum
Turbidometric 4485-9 
Complement C4, Serum
Turbidometric 4498-2 
Complement, Total (CH50)
Quantitative IVD Assay 4532-8 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 3 mL (1 mL) Serum Clot Activator (Red Top, No-Gel) Frozen
Instructions The CH50 component must be performed on Serum from a Red No-Gel Clot Tube..!

Allow 1 hour to clot at room temperature, Separate the serum from cells ASAP or no longer than 2 hours after collection!

Separate the serum from the cells and transfer 3mL(1mL) of serum into a standard transport tube and freeze within 2 hours of collection.
It is critical to freeze the complement specimen immediately after the transfer of specimen to a transport tube.
Reasons for Rejection: Use of serum separator tube, Clotting at 2-8°C, Exposure to repeated freeze/thaw cycles, Samples containing high levels of lipid, hemoglobulin or bilirubin cause interference and should be avoided.
Stability: Room Temperature 2 hours, Refrigerated n/a, Frozen 2 Weeks
GENERAL INFORMATION
Testing Schedule Batched  
Expected TAT 5-7 Days  
CPT Code(s) 86162, 86160X2
Lab Section Immunology - Serology