Ascites Fluid Analysis | Medical Algorithm

Urine has a high creatinine value, while body fluids tend to have levels comparable to that of serum.

ratio of fluid creatinine-to-serum creatinine =

= (body fluid creatinine in mg/dL) / (serum creatinine in mg/dL)

Features of urine compared to other body fluids:

(1) high creatinine

(2) high urea

(3) high potassium

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Distinguishing Urine from Ascitic or Pleural Fluid