Table 1.

Sensitivity and Specificity of Components of the Urinalysis, Alone and in Combination (References in Text)

TestSensitivity %
(Range)
Specificity %
(Range)
Leukocyte esterase83 (67–94)78 (64–92)
Nitrite53 (15–82)98 (90–100)
Leukocyte esteraseor nitrite
positive
93 (90–100)72 (58–91)
Microscopy: WBCs73 (32–100)81 (45–98)
Microscopy: bacteria81 (16–99)83 (11–100)
Leukocyte esteraseor nitrite or
microscopy positive
99.8 (99–100)70 (60–92)