clin chem urinalysis- USG

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5 Terms

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Urine specific gravity (USG)

Evaluates renal tubular function

  • How well they respond to ADH

  • how well they reabsorb water back into bloodstream

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USG range dog

  • 1.018- 1.045

  • Avg- 1.025

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Isosthenuric urine

Urine has same USG as glomerular filtrate

  • Range: 1.008-1.012

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Fixed USG

If the usg stays in the isosthenuric range it is termed fixed usg

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Fixed usg indicates

2/3- ¾ of nephrons are non functional (renal failure)

  • Water is not being reabsorbed and renal tubules are notnresponding to ADH