Trace Protein in Urine
Trace of Protein in Urine
What does a trace of protein in urine mean?
"Trace protein in urine" often refers to the small amount of albumin in urine. A trace of protein in urine means that it is meaningless, harmless, normal, or occasionally; However, it may also indicate an early or mild kidney disease. In the case of no urinary tract infection and no heart failure, there is a small amount of albumin in normal urine (5~30mg /24h). If the amount of albumin in urine exceeds 30mg /24h, you will be diagnosed with "trace protein in urine".
Most of the time, trace protein can be ignored. The possible causes are:
- Hypertension, high blood pressure. Here, it does not yet leading to a kidney damage. With the development of hypertension, there is a renal involvement, and then, the patients can have large amount of protein in urine.
- Obesity, in obese population
- Hyperlipidemia: elevated concentrations of lipids in the blood.
- Smoking and alcohol consumption.
- Vigorous exercise.
- Fever, overheating, undercooling.
In the early or mild kidney disease or kidney damage, the patients also have trace protein in urine. The trace protein in urine causes are as follow:
- Most glomerular diseases: e.g. glomerulonephritis.
- Early lupus nephritis.
- Tubulointerstitial disease, involving the renal re-absorption system.
Trace protein in urine in diabetic nephropathy
It is the most clinically significant, that through testing the amount of trace protein in urine, the doctor can diagnose an early diabetic nephropathy for the diabetic. In diabetes, with special urine protein test methods, the trace amounts of albumin in urine can be detected. The diagnostic indicator of early diabetic nephropathy: Albumin in urine 30~300mg /24h.
When to contact a doctor?
Under normal circumstances, trace amounts of protein can not be detected by a routine urine test strips. Moreover, the trace protein in urine is usually meaningless, harmless, normal, physiological. You do not have to worry about it. However, if you have diabetes, then the trace albumin in urine should be taken seriously. Contact your doctor for further consultation and examination.
Last update: 2012-10-16