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Test ID C5B9 SC5b-9 Level Terminal Complement Complex, Plasma

Specimen Required

Patient Preparation:

1. Fasting preferred.

2. Do not collect a specimen for the 48 hours following a plasma exchange.

Collection Container/Tube: Light-blue top (3.2% sodium citrate)

Submission Container/Tube: Plastic vial

Specimen Volume: 1.5 mL

Collection Instructions:

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

2. Centrifuge between 1000-2000 x g for 10 minutes at 4° C and aliquot plasma into plastic vial.

3. Freeze specimen within 30 minutes.

Useful For

Detecting increased complement activation

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Reporting Name

SC5b-9 Complement, P

Specimen Type

Plasma Na Cit

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Plasma Na Cit Frozen 14 days

Reference Values

≤250 ng/mL

Day(s) Performed

Tuesday, Friday

Report Available

3 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
C5B9 SC5b-9 Complement, P 93244-2


Result ID Test Result Name Result LOINC Value
616921 SC5b-9 Complement, P 93244-2