Overview: Total Leukocyte Count Fluid TestIntroduction: The Total Leukocyte Count Fluid Test measures leukocytes in body fluids to diagnose infections, causing swelling. Aligned with 2023 IDSA guidelines, it uses hematology methods for high specificity, supporting general screening. This test is critical for guiding diagnosis, treatment planning, and improving outcomes in hematology for patients with suspected fluid infections.
Other Names: TLC Fluid Assay, Fluid White Cell Count Test.
FDA Status: Laboratory-developed test (LDT), meeting hematology standards for diagnostic accuracy.
Historical Milestone: Fluid leukocyte counting began in the 1900s with infection research. Automated analyzers improved in the 2000s, enhancing diagnostic precision.
Purpose: Measures leukocytes in body fluids to diagnose infections, guides treatment, and evaluates patients with swelling.
Test Parameters: 1. Total Leucocyte Count
Pretest Condition: No fasting required. Collect body fluid, pleural fluid, or peritoneal fluid. Report history of swelling or infection symptoms.
Specimen: Body Fluid (sterile container, 5-10 mL), Pleural Fluid (sterile container, 5-10 mL), Peritoneal Fluid (sterile container, 5-10 mL). Transport in a biohazard container.
Sample Stability at Room Temperature: 2 hours
Sample Stability at Refrigeration: 24 hours
Sample Stability at Frozen: Not frozen
Medical History: Document swelling, pain, or history of infections. Include current medications, especially antibiotics.
Consent: Written consent required, detailing the tests purpose, infection implications, and risks of sample collection.
Procedural Considerations: Uses automated hematology analyzers to count leukocytes in body fluids. Results are available in 1-2 days, supporting clinical decisions. Performed in laboratories, often for fluid infection diagnosis.
Factors Affecting Result Accuracy: Improper fluid collection or contamination can affect results. Recent antibiotic use may alter counts.
Clinical Significance: Elevated leukocyte counts confirm fluid infections, guiding antibiotic therapy. Normal counts may require culture or imaging.
Specialist Consultation: Consult an infectious disease specialist or surgeon for result interpretation and treatment planning.
Additional Supporting Tests: Fluid culture, imaging, or Gram stain to confirm fluid infection diagnosis.
Test Limitations: Non-specific for infection type; clinical correlation is needed. Sample quality affects sensitivity.
References: IDSA Infection Guidelines, 2023; Clinical Infectious Diseases, Stevens DL, 2022.
