Indications Renal biopsy in cases of acute post streptococcal glomerulonephritis:
- Renal insufficiency, especially if the glomerular filtration rate remains less than 30 mL/min/1.73 m 2 for more than 1 week,
- Prescence of signs of chronic renal failure
- Family history of nephritis
- Past history of renal disease.
- Presence of nephrotic syndrome,
- absence of evidence of streptococcal infection,
- normal C3 complement levels (most important),
- Hematuria, proteinuria, ↓ renal function, and/or a low C3 level persist > 2 months after onset.
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