16th October 2019


What does it mean when urine has a low specific gravity?

Urinary specific gravity (SG) is a measure of the concentration of solutes in the urine. It measures the ratio of urine density compared with water density and provides information on the kidney's ability to concentrate urine. A urinary specific gravity measurement is a routine part of urinalysis.

Just so, what does it mean when your specific gravity is high?

To put it another way, the specific density of water would be 1.000. Ideally, urine specific gravity results will fall between 1.002 and 1.030 if your kidneys are functioning normally. Specific gravity results above 1.010 can indicate mild dehydration. The higher the number, the more dehydrated you may be.

Why does diabetes insipidus have a low specific gravity?

Trauma, stress reactions, surgery, and many drugs cause an increase in ADH secretion. A low specific gravity occurs in three situations. In diabetes insipidus, there is an absence or decrease of anti-diuretic hormone. Glomerulonephritis and pyelonephritis cause a decreased urine volume and low specific gravity.

Why do we measure specific gravity?

The term “Specific Gravity” (SG) is used to define the weight or density of a liquid as compared to the density of an equal volume of water at a specified temperature. The temperature used for measurement is usually 39.2oF (4oC), because this temperature allows water to assume its maximum density.
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