Red Blood Cells (Microscopic)
- Sample Type
- Standard
- Fasting
- No
- Unit
- cells/HPF
This component measures the presence of intact erythrocytes in the urine sediment using high-power field (HPF) microscopy. Within a Urine Routine panel, it is the gold standard for identifying microscopic hematuria. The presence of RBCs can indicate damage to the glomerular basement membrane, physical trauma to the urinary tract (kidney stones), infection (cystitis), or malignant processes. Distinguishing dysmorphic RBCs from isomorphic ones can further help localize the source of bleeding to the renal parenchyma versus the lower urinary tract.
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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 menstrual contamination, intense physical exercise shortly before the test, or presence of myoglobin/hemoglobin from muscle breakdown. A second opinion or repeat test is often needed to confirm persistence of hematuria.
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 Red Blood Cells (Microscopic):
Official Sources
- RBC count: MedlinePlus Medical EncyclopediaMedlinePlus
- 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.
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