Increased Urine Specific Gravity
September 10th, 2020
Overview
If the urine specific gravity is reduced then this reflects an inability to produce dilute urine. As a result, the urine is excessively concentrated.
Causes of Increased Urine Specific Gravity
Increased Electrolytes
- Dehydration - poor intake, GI losses, diuresis
- Syndrome of inappropriate antidiuretic hormone secretion (SIADH)
- Adrenal insufficiency
- Hypervolaemic hyponatraemia - liver cirrhosis, congestive cardiac failure, nephrotic syndrome
Other Solutes
- Glycosurea (diabetes)
- Proteinuria (e.g. glomerulonephropathy, myeloma)
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