IgA nephropathy (IgAN) is the most common form of glomerulonephritis. Asymptomatic microscopic hematuria with or without proteinuria is the most common presentation of IgAN, and episodic gross hematuria following an upper respiratory tract infection is a classic presentation. Kidney manifestations usually occur concomitantly with the respiratory infection in IgAN (“synpharyngitic” nephritis), as opposed to the typical 7- to 10-day latent period with IRGN. Moreover, complement levels are typically normal in IgAN, whereas C3 is typically low and C4 is normal in IRGN