SERUM ASCITES ALBUMIN GRADIENT (SAAG)

What this test checks

Compares albumin in blood and ascitic fluid. The difference (gradient) tells whether ascites is from liver disease, heart failure, or other causes.

Why do people get this test?

Standard part of ascites work-up after fluid drainage.

When you should consider this test

• Ascites (belly fluid) drained
• Suspected liver cirrhosis
• Doctor requested fluid analysis

How to prepare

Both blood and ascitic fluid samples needed.