Spectrum: Local Antimicrobial Stewardship, for UCLA Health

Urinalysis

Sensitivity and Specificity

Leukocyte Esterase Test

Sensitivity (Range)

  • 83% (67-94)

Specificity (Range)

  • 78% (64-92)

Nitrite Test

Sensitivity (Range)

  • 53% (15-92)

Specificity (Range)

  • 98% (90-100)

Leukocyte Esterase or Nitrate Test Positive

Sensitivity (Range)

  • 93% (90-100)

Specificity (Range)

  • 72% (58-91)

Microscopy, WBC's

Sensitivity (Range)

  • 73% (32-100)

Specificity (Range)

  • 81% (45-98)

Microscopy, Bacteria

Sensitivity (Range)

  • 81% (16-99)

Specificity (Range)

  • 83% (11-100)

Leukocyte Esterase Test, Nitrate Test or Microscopy Positive

Sensitivity (Range)

  • 99.8% (99-100)

Specificity (Range)

  • 70% (60-92)