Serum Ascites to Albumin Gradient (SAAG)

Determine if ascites due to portal hypertension.

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1.Serum Albumin?
2.Ascites Albumin?
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1. Serum Albumin?

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About this Calculator

The serum to ascites albumin gradient (SAAG) can be used to help determine the etiology of ascites by identifying the presence of portal hypertension.

Serum-Ascites Albumin Gradient (SAAG) = Albserum - Albascites

The presence of a gradient ≥1.1 g/dL or ≥11 g/L indicates that the patient has portal hypertension with 97 percent accuracy. A gradient <1.1 g/dL or <11 g/L indicates that the patient does not have portal hypertension.


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