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HelpTest Code COM Complement, Total, Serum
Additional Codes
This test may also be referred to as CH50
Specimen Required
Patient Preparation: Fasting preferred.
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Red top (serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions:
1. Immediately after specimen collection, place the tube on wet ice.
2. After sample has clotted on wet ice, centrifuge at 4° C and aliquot serum into 5 mL plastic vial.
3. Within 30 minutes of centrifugation, freeze specimen. Sample must be placed on dry ice if not frozen immediately.
CMH COLLECTION: 2 mL in red vacutainer
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Frozen | 28 days |
Useful For
Detection of individuals with an ongoing immune process
First-tier screening test for congenital complement deficiencies
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Day(s) Performed
Monday through Friday
Report Available
1 to 2 daysReporting Name
Complement, Total, SReference Values
30-75 U/mL
Method Name
Automated Liposome Lysis Assay
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86162