Not Medical Advice: SP. GR. stands for specific gravity.
Urine specific gravity, as explained by MedlinePlus, is a laboratory test that shows the concentration of all chemical particles in the urine. This test helps evaluate your body's water balance and urine concentration.
Reference Values: 1.002-1.030
Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples.
Osmolality is a more specific test for urine concentration. The urine specific gravity test is easier and more convenient, and is usually part of a routine urinalysis.
Increased urine specific gravity may be due to conditions such as:
Loss of body fluids (dehydration)
Diarrhea that causes dehydration
Heart failure
Sugar (glucose) in the urine
Syndrome of inappropriate antidiuretic hormone secretion (SIADH)
Decreased urine specific gravity may be due to:
Damage to kidney tubule cells (renal tubular necrosis)
Diabetes insipidus
Drinking too much fluid
Kidney failure
Check out 6 Tips for Keeping Your Urinary Tract System Healthy, shared by Verywell.