What is the differential diagnosis of synpharyngitic hematuria?
The onset of hematuria shortly after a respiratory infection is common to both immunoglobulin a nephropathy and poststreptococcal Glomerulonephritis.
However, the latent period from infection to gross hematuria averages 1 to 3 days in immunoglobulin a nephropathy versus 10 to 14 days in poststreptococcal Glomerulonephritis .
Poststreptococcal Glomerulonephritis can also be distinguished from immunoglobulin a nephropathy by the presence of hypocomplementemia, which is rarely seen in immunoglobulin a nephropathy, and the elevation of antistreptococcal antibodies in the early phase of infection.
