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Test Code C5AG C5 Complement, Antigen, Serum

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Reporting Name

C5 Complement, Antigen, S

Specimen Type

Serum


Ordering Guidance


The total complement 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 for 12 hours is preferred but not required.

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Reject Due To

Gross hemolysis OK
Gross lipemia Reject
Gross icterus OK

Specimen Stability Information

Specimen Type Temperature Time
Serum Frozen (preferred) 60 days
  Refrigerated  28 days
  Ambient  7 days

Specimen Minimum Volume

0.5 mL

Day(s) Performed

Monday through Friday

Specimen Retention Time

14 days

Report Available

2 to 5 days

Reference Values

10.6-26.3 mg/dL

Useful For

Diagnosis of C5 deficiency

 

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

CPT Code Information

86160

LOINC Code Information

Test ID Test Order Name Order LOINC Value
C5AG C5 Complement, Antigen, S 4505-4

 

Result ID Test Result Name Result LOINC Value
C5AG C5 Complement, Antigen, S 4505-4