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Test Code LAB152 Complement C3, Serum

Reporting Name

Complement C3, S

Useful For

Assessing disease activity in systemic lupus erythematosus

 

Investigating an undetectable total complement level

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

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


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 7 days
  Frozen  28 days
  Ambient  72 hours

Reference Values

75-175 mg/dL

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

86160

LOINC Code Information

Test ID Test Order Name Order LOINC Value
C3 Complement C3, S 4485-9

 

Result ID Test Result Name Result LOINC Value
C3 Complement C3, S 4485-9

Cautions

The results are dependent on appropriate specimen transport and storage.

 

Quantitation of specific proteins by nephelometric means may not be possible in lipemic sera due to the extreme light scattering properties of the specimen. Turbidity and particles in the specimen may result in extraneous light scattering signals, resulting in variable specimen analysis.

Reject Due To

Gross hemolysis OK
Gross lipemia Reject
Gross icterus OK

NY State Approved

Yes

Method Name

Nephelometry

Secondary ID

8174

Forms

If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.

Day(s) Performed

Monday through Friday

Report Available

Same day/1 to 2 days