White precipitate in the urine is not necessarily nephritis, so a routine urine test should be performed at a nephrologist. White precipitates can also occur when the patient does not drink enough water, the urine becomes concentrated and is oversaturated with salts. White precipitates may also occur in the urine due to an increase in white blood cells when pus is present due to diseases such as cystitis or pyelonephritis. However, nephritis can also manifest as white precipitates, so care needs to be taken to differentiate them.