TABLE 1

Sensitivity and Specificity of Components of Urinalysis, Alone and in Combination

TestSensitivity (Range), %Specificity (Range), %
Leukocyte esterase test83 (67–94)78 (64–92)
Nitrite test53 (15–82)98 (90–100)
Leukocyte esterase or nitrite test positive93 (90–100)72 (58–91)
Microscopy, WBCs73 (32–100)81 (45–98)
Microscopy, bacteria81 (16–99)83 (11–100)
Leukocyte esterase test, nitrite test, or microscopy positive99.8 (99–100)70 (60–92)