Am Fam Physician. 2005;72(11):2182
The article “Diagnosis and Management of Acute Pyelonephritis in Adults,” (March 1, 2005, page 933) contained an error in Table 3, which discussed the laboratory diagnosis of urinary tract infection. In this table, the sensitivity and specificity for nitrate test were inadvertently transposed, and should have been listed as 35 to 85 percent sensitivity and 92 to 100 percent specificity. The online version of this article has been corrected, and the corrected Table 3 is reprinted below.
| Test | Finding | Sensitivity (%)* | Specificity (%)* |
|---|---|---|---|
| Urinalysis16,17 | > 5 WBCs/HPF | 72 to 95 | 48 to 82 |
| > 10 WBCs/HPF | 58 to 82 | 65 to 86 | |
| Leukocyte esterase test3 | Positive | 74 to 96 | 94 to 98 |
| Nitrite test18 | Positive | 35 to 85 | 92 to 100 |
| Leukocyte esterase and nitrite tests15,19 | Either test positive | 75 to 84 | 82 to 98 |
| Dipstick hematuria20 | Positive | 44 | 88 |
| Gram stain of uncentrifuged urine21 | > 1 bacterium per HPF | 93 | 95 |