Antineutrophil Cytoplasmic Antibodies (ANCA)
Test ID:
704717
CPT code:
86256 (x3
Clinical Use:
Antineutrophil cytoplasmic autoantibodies (ANCA) are a serological marker associated with vasculitis and glomerulonephritis. Specifically, ANCA have been found (at frequencies ranging from 70% to 90%) in patients with active Wegener granulomatosis, microscopic polyarteritis nodosa, and idiopathic crescentic glomerulonephritis (with manifestations ranging from kidney-limited disease to extrarenal systemic disease, including pulmonary-renal syndromes). Glomerular lesions in patients with ANCA-associated systemic vasculitis or renal-limited disease are virtually identical. Normal controls are negative for ANCA and <10% of patients with other renal diseases are positive. ANCA may be directly involved in the pathogenesis of the vascular injury that causes the clinical manifestations in ANCA-associated disease.
Specimen Type:
Serum
Requested Volume:
1 mL
Minimum Volume:
0.5 (Note: This volume does not allow for repeat testing.)
Container Type:
Red-top tube or gel-barrier tube
Storage Instructions:
Room temperature
Stability Requirements:
Temperature |
Period |
---|---|
Room temperature |
14 days |
Refrigerated |
14 days |
Frozen |
14 days |
Freeze/thaw cycles |
Stable x3 |
Rejection Criteria
Gross hemolysis; lipemia; bacterial contamination
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