Laboratory Test Information Guide

Details for Complement Total, Serum

Test Name: Complement Total, Serum
Alternate Name(s): CH50
TCOM
Total Complement Function Assay
Laboratory: Clinical Immunology
Specimen Type: Adult:
5 mL Gold top Vacutainer tube

Pediatric:
0-2 years: 2 x 0.5 mL Red or Gold top Microtainer
2-10 years: 3 mL Red top Vacutainer tube

Light Green (Li-Heparin) or Lavender (EDTA) top tubes are NOT acceptable
Collection Information: Minimum volume of serum required is 500 L.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: Batch analysis
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
5 days
Stat
N/A
 
Reference Range: 42 95 U/mL
Effective Date: 2010-01-11
Revised Date: 2020-05-25
Critical Value:  
Interpretive Comments: The total complement test is a screen for complement deficiencies or significant activation. The assay measures the relative activity of the total classical pathway (C1-C9).

Complement is very labile and reliable results depend on correct handling of the specimen.
Special Processing:  
Comments:  
Method of Analysis: Spectrophotometry
Critical Information Required:  
Storage & Shipment: Store and ship serum frozen.
System Codes: 
Cerner
TCOM
 
Referred To:  

Questions? Comments? Contact Laura Gopaul