Granulomatosis with polyangiitis laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Ali Poyan Mehr, M.D. [2]Associate Editor(s)-in-Chief: Krzysztof Wierzbicki M.D. [3]Amandeep Singh M.D.[4]

Overview

Laboratory findings consistent with the diagnosis of Granulomatosis with polyangiitis include, anti-neutrophil cytoplasmic antibody, elevated blood urea nitrogen, elevated creatinine serum, erythrocyte sedimentation rate, C reactive protein, proteinuria, microscopic hematuria, and red blood casts.

Laboratory Findings

Laboratory findings consistent with the diagnosis of Granulomatosis with polyangiitis include, anti-neutrophil cytoplasmic antibody, elevated blood urea nitrogen, elevated creatinine serum, erythrocyte sedimentation rate, C reactive protein, proteinuria, microscopic hematuria, and red blood casts.

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Renal Biopsy

Renal biopsy is the gold standard in establishing Granulomatosis with polyangiitis.[1] Renal biopsy reveals under electron microscopy:

Under light microscopy, necrotizing and crescentic glomerulonephritis is seen. [2]

References

  1. Berden AE, Ferrario F, Hagen EC, Jayne DR, Jennette JC, Joh K; et al. (2010). "Histopathologic classification of ANCA-associated glomerulonephritis". J Am Soc Nephrol. 21 (10): 1628–36. doi:10.1681/ASN.2010050477. PMID 20616173.
  2. Bajema IM, Hagen EC, Ferrario F, de Heer E, Bruijn JA (2001). "Immunopathological aspects of systemic vasculitis". Springer Semin Immunopathol. 23 (3): 253–65. PMID 11591101.