The reference value of urine specific gravity is between 1.015 and 1.025. Urine specific gravity 1.003 suggests that the urine specific gravity is reduced, and there are two kinds of physiological and pathological. Physiological belongs to the normal range; pathological abnormal, need timely treatment.
Urine specific gravity refers to the weight ratio of the same volume of urine to pure water at 4℃. The specific gravity of urine is affected by the reabsorption and concentration function of renal tubules, and varies with the content of water, salts and organic matter in urine, and is also affected by urinary proteins, urinary glucose, and cellular composition in pathological conditions. Urine specific gravity can roughly reflect the concentration and dilution function of the kidney. Specific gravity of urine is divided into physiological and pathologic two kinds.
1. Physiological: seen in a large amount of drinking water, etc., is a normal phenomenon, after reducing the amount of intake will usually return to normal.
2. Pathological: seen in uremia, interstitial nephritis, renal failure and other diseases that affect the concentration function of urine, is not normal, and need to be treated as soon as possible.
Patients with decreased specific gravity of urine should go to the hospital in time, under the guidance of professional physicians to clarify the cause and timely treatment.