Davis's Lab & Diagnostic Tests

Peritoneal Fluid Analysis

Peritoneal Fluid Analysis is a topic covered in the Davis's Lab & Diagnostic Tests.

To view the entire topic, please or purchase a subscription.

Davis’s Laboratory and Diagnostic Tests Online, powered by Unbound Medicine, provides nurses and students access to 400+ test monographs containing reference ranges, indications, patient preparation and result interpretation. Explore these free sample topics:


-- The first section of this topic is shown below --


Ascites fluid analysis.

Common Use:
To evaluate and classify the type of fluid within the peritoneal cavity to assist with diagnosis of cancer, infection, necrosis, and perforation.

Peritoneal fluid collected in a red- or green-top (heparin) tube for amylase, glucose, and alkaline phosphatase; lavender-top (EDTA) tube for cell count; sterile containers for microbiology specimens; fluid in a clear container with anticoagulant for cytology. Ensure that there is an equal amount of fixative and fluid in the container for cytology.

Normal Findings:
(Method: Spectrophotometry for glucose, amylase, and alkaline phosphatase; automated or manual cell count, macroscopic examination of cultured organisms, and microscopic examination of specimen for microbiology and cytology; microscopic examination of cultured microorganisms)

Peritoneal FluidReference Value
ColorPale yellow
AmylaseParallels serum values
Alkaline phosphataseParallels serum values
CEAParallels serum values
GlucoseParallels serum values
Red blood cell countNone seen
White blood cell countLess than 300 cells/microL
CultureNo growth
Acid-fast stainNo organisms seen
Gram stainNo organisms seen
CytologyNo abnormal cells seen

-- To view the remaining sections of this topic, please or purchase a subscription --