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HelpTest Code C1QM C1q Complement, Functional, Serum
Additional Codes
| MAYO Test ID |
| C1QFX |
| EPIC Test ID |
| LAB2373 |
Reporting Name
C1Q Complement, Functional, SUseful For
Diagnosis of C1 deficiency
Investigation of a patient with an absent total complement level
Method Name
Automated Liposome Lysis Assay
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Serum RedOrdering Guidance
The total complement (CH50) assay (COM / Complement, Total, Serum) should be used as a screen for suspected complement deficiencies before ordering individual complement component assays. A deficiency of an individual component of the complement cascade will result in an undetectable CH50.
Specimen Required
Patient Preparation: Fasting preferred
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Collection Container/Tube: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions:
1. Immediately after specimen collection, place the tube on wet ice.
2. Centrifuge and aliquot serum into plastic vial.
3. Immediately freeze specimen.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Frozen | 14 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | Reject |
| Gross icterus | OK |
Reference Values
34-63 U/mL
Day(s) Performed
Monday through Friday
CPT Code Information
86161
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| C1QFX | C1Q Complement, Functional, S | 87722-5 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| C1QFX | C1Q Complement, Functional, S | 87722-5 |