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Test Code C1ESTNON C1q Complement, Functional, Serum

Reporting Name

C1Q Complement, Functional, S

Useful For

Diagnosis of first component of complement (C1) deficiency

 

Investigation of a patient with an absent total complement (CH50) level

Method Name

Turbidimetry

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Serum Red

Specimen Required

Collection Container/Tube: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions:

1. Immediately after drawing the specimen, place the tube on wet ice.

2. Spin down and separate serum from clot.

3. Immediately freeze specimen.

Additional Information: Fasting preferred.

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Red Frozen 14 days

Reference Values

34-63 U/mL

Day(s) and Time(s) Performed

Monday through Saturday; Continuous with a 3 p.m. cutoff

Test Classification

This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

86161

LOINC Code Information

Result ID Reporting Name LOINC Code
C1QFX C1Q Complement, Functional, S In Process