What does urinary protein+-mean?

Urine routine found that increased urinary protein is a kind of proteinuria.

There is a trace protein in the urine of normal people, which is negative within the normal range and is recorded as (-). When the urine protein content is greater than 0. 15g/24h, if the urine protein is detected < 150mg/d, it means that the amount of urine protein excreted by human body is obviously increased, and the urine routine can be positive (+).

Persistent positive urine protein often means that the kidney has changed, so we can judge the degree of kidney injury and the effect of kidney treatment according to the positive urine protein.

Extended data:

Functional proteinuria is a kind of mild (24-hour proteinuria is generally less than 0.5 ~ 1 g) and temporary proteinuria, which disappears rapidly after the cause is eliminated. It often happens to young people and can appear after mental stress, severe cold or heat, long-distance marching, strong physical labor, congestive heart failure and eating a high-protein diet.

There is no proteinuria in morning urine, and proteinuria gradually appears after getting up. When standing, walking or strengthening the forward posture for a long time, the proteinuria content increases, and decreases or disappears after lying down 1 hour, which mostly occurs in slender young people or adults. In addition to nephropathy, we should pay attention to repeated postural proteinuria, such as nutcracker phenomenon (also known as left renal vein compression syndrome, which is caused by the compression of left renal vein by aorta and superior mesenteric artery).

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