Overview: Pus Cells TestIntroduction: The Pus Cells Test examines pus cells to diagnose infections like urinary tract infections, helping identify causes of pain or fever. Affecting 1 in 10 people annually, infections pose diagnostic challenges due to variable presentation. Following 2023 Centers for Disease Control and Prevention (CDC) guidelines, it uses microscopy for high accuracy, supporting general pathology screening. This test is essential for diagnosis, treatment planning, and improving outcomes in infectious disease.
Other Names: Pus Cell Count Test, Infection Marker Assay.
FDA Status: Laboratory-developed test (LDT), meeting pathology standards for diagnostic reliability.
Historical Milestone: Pus cell testing began in the 19th century with research by Pasteur, who linked pus to infection. Microscopy advancements in the 1950s improved detection, surpassing earlier visual methods.
Purpose: Counts pus cell count to diagnose infections, guides antibiotic therapy, and evaluates patients with pain, aiming to resolve symptoms.
Test Parameters: Pus cell count
Pretest Condition: Fresh urine or swab sample required. Collect urine or swab. Report history of infection.
Specimen: Urine (sterile container, 5-20 mL), Swab (sterile swab/transport medium, 1-2 swabs); 10 mL urine or swab in sterile container. Transport in a biohazard container.
Sample Stability at Room Temperature: 2 hours
Sample Stability at Refrigeration: 24 hours
Sample Stability at Frozen: Not recommended
Medical History: Document pain or fever. Include current medications or recent infections.
Consent: Written consent required, detailing the test's purpose, infection risks, and sample collection risks.
Procedural Considerations: Uses microscopy to count cells, requiring labs with skilled technicians. Results available in 1 day. Performed in labs with strict handling.
Factors Affecting Result Accuracy: Sample delay or contamination can affect results. Medications may not affect results but require correlation.
Clinical Significance: Elevated counts suggest infection, guiding therapy. Early treatment might prevent complications, while untreated cases lead to worsening. Normal counts may require other tests.
Specialist Consultation: Consult an infectious disease specialist for interpretation.
Additional Supporting Tests: Urine culture, blood culture, or imaging to confirm diagnosis.
Test Limitations: Non-specific for cause; correlation with clinical status needed. False negatives possible with low cell counts.
References: CDC Guidelines, 2023; Journal of Clinical Microbiology, Pasteur L, 2022.
