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Test Findings
 
Test Findings
 

Increased Urine Specific Gravity

 
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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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