Which investigation best confirms Post-streptococcal glomerulonephritis?
Answer and explanation
Correct answer: D. Low serum C3 with a raised antistreptolysin O titre
- Step 1: The test that best confirms Post-streptococcal glomerulonephritis is: low serum C3 with a raised antistreptolysin O titre.
Answer
Low serum C3 with a raised antistreptolysin O titre.
Why not the others: 'Urine culture': it detects infection. 'Renal ultrasound alone': it does not identify the cause. 'Kidney biopsy as first test': it is rarely needed.
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