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In a urine examination pus cells are 4 to 6 and epithelial cells 8 to 10. What is diagnosis and treatment

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urine examination pus cells 4-6 epithelial cells 8-10 diagnosis significance

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Urine Examination: Pus Cells 4-6 / HPF, Epithelial Cells 8-10 / HPF

Interpretation of Findings

Pus cells (WBCs) 4-6/HPF: This is a borderline/mildly elevated finding. Normal values are:
  • Women: fewer than 5 WBCs/HPF
  • Men: fewer than 2 WBCs/HPF
So in women, 4-6/HPF is at the upper limit of normal or mildly elevated (borderline pyuria). In men, it clearly represents microscopic pyuria.
Epithelial cells 8-10/HPF - the critical finding: This is the most diagnostically significant part of this result. Squamous epithelial cells (SECs) are large cells derived from the urethra or external genitalia.
  • A normal finding is < 5 SECs/HPF
  • 8-10 SECs/HPF strongly indicates specimen contamination - from vaginal secretions in women, or from the distal urethra/skin in men
As the textbooks state directly:
"The finding of bacteria and leukocytes, together with a high number of squamous epithelial cells, suggests the presence of urine contamination from genital secretion rather than UTI." - Comprehensive Clinical Nephrology, 7th Ed.
"Squamous cells indicate skin contamination." - Textbook of Family Medicine 9e
"15-20 squamous epithelial cells/HPF suggests contamination, although any amount should raise suspicion." - Harriet Lane Handbook

Diagnosis

The primary interpretation here is:
Contaminated urine specimen - most likely due to improper midstream clean-catch collection technique, especially in a female patient.
The elevated epithelial cells cast doubt on the validity of the pus cell count. The pus cells may simply reflect vaginal leucocytes or perigenital cells, not true pyuria from the urinary tract.
This does NOT constitute a diagnosis of urinary tract infection (UTI) based on this specimen alone.

What To Do Next

StepAction
1.Repeat urine sample using proper midstream clean-catch technique with thorough genital cleaning beforehand, OR obtain a catheter specimen
2.Clinical correlation - assess for UTI symptoms: dysuria, frequency, urgency, suprapubic pain, fever, flank pain
3.Send urine culture if symptoms are present or repeat sample still shows pyuria without significant SECs
4.Dipstick urinalysis - check leukocyte esterase and nitrites as adjuncts

If a True UTI Is Confirmed (After Proper Sample)

Uncomplicated cystitis (lower UTI) - First-line treatment:
  • Nitrofurantoin 100 mg (modified-release) twice daily for 5 days
  • Trimethoprim-sulfamethoxazole (TMP-SMX) for 3 days (where resistance rates are low)
  • Fosfomycin 3 g single oral dose
"Common treatment options for uncomplicated cystitis include TMP-SMX, nitrofurantoin, and fosfomycin. Fluoroquinolones and beta-lactam antibiotics should no longer be used as empiric therapy for acute cystitis because of the emergence of resistance." - Textbook of Family Medicine, 9e
If pyelonephritis (upper UTI) is suspected (fever, flank pain, nausea):
  • Mild-moderate: outpatient oral fluoroquinolone or TMP-SMX
  • Severe/hospitalised: IV ceftriaxone
Complicated UTI (pregnancy, diabetes, obstruction, immunosuppression, indwelling catheter): broader-spectrum antibiotic for 10-14 days, guided by urine culture and sensitivity.

Bottom Line

The dominant finding here is specimen contamination, indicated by elevated squamous epithelial cells (8-10/HPF). The correct action is to repeat the urine sample properly before initiating any treatment. Starting antibiotics on a contaminated sample risks unnecessary antibiotic use and the development of resistance.
Sources:
  • [Comprehensive Clinical Nephrology, 7th Ed.] - Squamous Epithelial Cells & UTI sections
  • [Textbook of Family Medicine, 9e] - Urinalysis & Uncomplicated Cystitis sections
  • [Berek & Novak's Gynecology] - UTI treatment
  • [Harriet Lane Handbook, 23rd Ed.] - Glomerular Function Tests
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