Urine Specific Gravity - Shijiazhuang Kidney Disease Hospital

Urine Specific Gravity is used to test the concentration function of kidneys, but accuracy is low because it is easily affected by many factors. The value of Specific Gravity depends on solute molecular weight solved in urine, molar concentration and molar volume.
This test helps evaluate your body's water balance and urine concentration.
Normal values are from 1.020 to 1.028.
Note: Normal value ranges may vary slightly among different laboratories.
Clinical Significance of Specific Gravity
The value of Specific Gravity is related to water intake and urine volume at that time, and it mainly depends on the concentration function of kidneys. .Urine specific gravity is a laboratory test that measures the concentration of all chemical particles in the urine.
Increased urine specific gravity may be due to:
•Dehydration
•Diarrhea that causes dehydration
•Diabetes
•Heart failure (related to decreased blood flow to the kidneys)
•Renal arterial stenosis
•Shock
•Acute Nephritis
Decreased urine specific gravity may be due to:
•Aldosteronism (very rare)
•Excessive water intake
•Diabetes insipidus
•Renal failure
•Renal tubular necrosis
•Severe kidney infection (pyelonephritis)

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