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Anti-C1Q Ab, IgG-994

Test info

Test name:

Anti-C1Q Ab, IgG

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Anti-C1Q Ab, IgG

Tests included:

This test is a component of Lupus Renal Activity Profile

Useful for:

Serial testing shows that increasing amounts of IgG anti-C1q predict renal flares in SLE patients. Elevated serum titers of anti-C1q antibodies tend to be associated with proliferative forms of lupus, glomerulonephritis and subendothelial deposits of of immune complexes.

Specimen

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

1.0 mL

Minimum volume:

0.3 mL (Note: This volume does not allow for repeat testing.)

Collection instructions:

Immediatley following collection, mix sample by gently inverting 5 times

Processing instructions:

Allow specimen to clot for a minimum of 30 minutes
Spin for 10 minutes within 1 hour of sample collection

Transport container:

Gold serum separator (SST) tube

Transport and stability:

Refrigerated (preferred) - 14 days

Ambient - 7 days

Frozen - 60 days

Freeze/thaw cycles - stable x1

Reason for rejection:

Grossly hemolyzed
Bacterial contamination
Lipemic specimen
Icteric specimen
Non-serum specimen types

Performance

Performing lab:

LabCorp Esoterix, CA (520147): R-NX

Days set up:

Varies, 1 day/week

TAT:

7 - 14 days

Method:

Enzyme Immunoassay (EIA)

Clinical and Interpretive info

Reference ranges:

< 20 Units

Billing

CPT codes:

83516

Tracking

Date created:

02/04/2020

Revised date:

07/12/2023

Review date:

07/12/2023