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C8 Complement, Functional, Serum

Additional Codes

LAB3615

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum Red


Advisory Information


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 total complement level.



Specimen Required


Patient Preparation: Fasting preferred

Supplies: Aliquot Tube, 5 mL (T465)

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

Reference Values

33-58 U/mL

Day(s) and Time(s) Performed

Monday through Friday; 3 p.m.

CPT Code Information

86161

LOINC Code Information

Test ID Test Order Name Order LOINC Value
C8FX C8 Complement, Functional, S 50997-6

 

Result ID Test Result Name Result LOINC Value
C8FX C8 Complement, Functional, S 50997-6

Analytic Time

Same day/1 day

Specimen Retention Time

14 days