Conclusion SAAG is valuable to differentiate ascitic fluid of portal hypertension from that of non-portal hypertension, and is superior to the exudates-transudate classification.

• 结论SAAG对鉴别门静脉高压性和非门静脉高压性腹水具有重要的临床价值，是一种较传统的渗漏出液概念更准确的分类方法。