Additional Information / Notes

Specific gravity between 1.002 and 1.035 on a random sample should be considered normal
if kidney function is normal. Since the specific gravity of the glomerular filtrate in Bowman’s
space ranges from 1.007 to 1.010, any measurement below this range indicates hydration
and any measurement above it indicates relative dehydration.

A specific gravity ?1.022 after a 12 hour period without food or water, may be an indication
that renal concentrating ability may be impaired indicating the possibility of generalized renal
impairment or nephrogenic diabetes insipidus. In end-stage renal disease, specific gravity
tends to become 1.007 to 1.010.

Any urine having a specific gravity over 1.035 may be contaminated, contain very high
levels of glucose, or may be the result of the recent administration of high density
radiopaque dyes intravenously for radiographic studies or low molecular weight dextran
solutions. Subtract 0.004 for every 1% glucose to determine non-glucose solute
concentration