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Test Name:
IgA Fibronectin Aggregates, by ELISA
- SBMF No:
45610 - Performance Lab Name:
Focus Diagnostics - Test Mnemonic:
FIB-IGA - ABN:
Not required - CPT Code:
83516 - LOINC Code:
13173-0 - Ref Lab Test No:
41431 (ARUP# 0098411) - Spec Type:
Serum - Spec Container:
Red top (serum) tube - Pref Vol:
1.0 mL - Min Vol:
0.5 mL - Fasting:
No - Spec Collect:
Routine venipuncture - Spec Process:
Clot 30 minutes
Promptly centrifuge 15 minutes
Immediately transfer serum to separate plastic tube - Spec Store Transport:
Refrigerated - Spec Stability:
1 week at room temperature (20-30°C)
2 months refrigerated (2-8°C)
3 years frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles - Methodology:
Enzyme-Linked Immunosorbent Assay (ELISA) - Clinical Significance:
Aggregates consisting of IgA complexed with fibronectin are found in sera of most patients with IgA nephropathy and patients with Henoch-Schonlein purpura. Detection of these aggregates is based on their specific attachment to a fragment of type 1 collagen. - Reference Range:
<3.0 - Additional Test Info:
This test is referred through ARUP Laboratories - Day Run:
Varies - Test Type:
IMMUNOLOGY
