Physical examination urine protein two plus sign is why

Physical examination urine protein two plus factors are considered glomerulonephritis, pyelonephritis, multiple myeloma and other factors caused by, details are as follows:

1, glomerulonephritis

glomerulonephritis can lead to glomerular filtration membrane damage, protein filtration rate increased, and then cause urine protein two plus signs.

2, pyelonephritis

patients renal tubular structure and function damage, will affect the absorption of small molecular weight protein, so that protein from the urine discharged, the above results.

3, multiple myeloma

multiple myeloma patients plasma small molecular weight protein increased, beyond renal tubular reabsorption, can cause physical examination urine protein two plus signs.