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Peritoneal Fluid Analysis (Qualitative/Quantitative Protein and Cell Count)

Published: August 9, 2026Updated: August 16, 2026

This test examines the fluid collected from your peritoneal space, often done during procedures like peritoneal dialysis or diagnostic evaluations, to assess protein content and cell composition.

Quick summary

["Understanding your peritoneal fluid helps diagnose infections, inflammation, or other conditions affecting your abdomen."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
89622-5
Short code
CT Guided Peritoneal space PC fluid asp
Synonyms
CT Guided Peritoneal space PC fluid asp
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ct
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Is Done

Doctors may order peritoneal fluid analysis to investigate symptoms like abdominal pain, swelling, fever, or unexplained weight loss. It’s also used in monitoring conditions like peritoneal dialysis, peritoneal carcinomatosis, or peritonitis.

What the Test Measures

The test evaluates protein levels and cell counts (white blood cells, red blood cells, and possibly bacteria) in the peritoneal fluid. Protein levels may indicate inflammation or fluid leakage, while cell counts can signal infection or other abnormalities.

Sample Collection and Preparation

Fluid is typically collected via a procedure called peritoneal dialysis or through a diagnostic needle inserted into the abdominal cavity. The sample is sent to a lab for analysis, often without further processing beyond centrifugation to separate cells from fluid.

What Results Mean

High protein levels or abnormal cell counts may suggest conditions like infection (e.g., peritonitis), inflammation, or tumors. Low protein levels could indicate fluid loss or leakage. Results are interpreted by your healthcare provider based on your symptoms and medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Peritoneal Fluid Profile (Qualitative)

Frequently asked questions

What does a high protein level in peritoneal fluid usually indicate?
A high protein level may indicate inflammation, infection (such as peritonitis), or conditions like peritoneal dialysis-related protein loss. It could also suggest leakage of protein-rich fluid from nearby tissues.
How soon will I hear my results?
Results are typically available within 1–3 business days, depending on lab processing times. Your healthcare provider will discuss them with you during your follow-up visit.
Can I avoid this test if I have no symptoms?
Not always. Your doctor may order this test even if you’re asymptomatic to monitor conditions like peritoneal dialysis, track fluid balance, or investigate suspected abdominal issues.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy