Serum C3 is persistently low in the following except (LQ)
|D||Glomerulonephritis related to bacterial endocarditis|
• Although all conditions mentioned in the question are associated with low complement levels. Persistently de levels' are not seen in post streptococcal glomerulonephritis.
• In post streptococcal glomerulonephritis: serum C. levels are depressed within 2 weeks, however, these us return to normal levels within 6 to 8 weeks.
• Persistently depressed levels after this period should suggest another cause such as presence of C3 nephritic f (Membranoproliferative glomerulonephritis).