White Blood Cells (Microscopic)
- Sample Type
- Standard
- Fasting
- No
- Unit
- /hpf
The presence of White Blood Cells (WBCs) in urine, known as pyuria, is a primary indicator of inflammation or infection within the urinary tract. In a microscopic examination (sediment analysis), finding significant numbers of leukocytes suggests that the immune system is responding to a pathogen (like bacteria in a UTI) or a physical irritant (like a kidney stone). Within a Complete Urine Examination, this component helps localize the source of symptoms such as dysuria or flank pain.
Check Your Result
Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
False positives can occur due to contamination from vaginal secretions or non-infectious conditions like interstitial cystitis. Conversely, WBCs can degrade rapidly in alkaline or low-gravity urine, leading to false negatives if the sample is not processed quickly.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for White Blood Cells (Microscopic):
Official Sources
- Complete blood count (CBC) - Mayo ClinicMayo Clinic
Research & Guidelines
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
Get Notified When Dr. Babu Is Available