Peritoneal fluid analysis is a lab test. It is done to look at fluid that has built up in the space in

the abdomen around the internal organs. This area is called the peritoneal space. The

condition is called ascities.The pH of peritoneal fluid ranges between 7.5 and 8.0 and

contains significant buffering capacity (Greenwalt, Nakamura, & diZerega, 1988). The pH of

peritoneal fluid in aspirates from 59 patients with perforated peptic ulcer was 7.0 to 7.8

(Howard & Singh, 1963).