White blood cells are not normally found in urine, so a normal level is zero or very few (typically 0–5 per hpf). Leukocytes ...

Per protocol at the institution, the laboratory performed microscopic analysis of urine (formal urinalysis) only if the dipstick examination was positive for nitrite, blood, leukocyte esterase ...

In vitro urine test (tests for leukocytes and ... test again or consult healthcare provider). If Leukocytes test is negative or trace but Nitrite test is positive: results suggest UTI.

In contrast, all 12 cases of invasive sepsis (5.1%; 95%CI: 2.6–8.7) occurred in 237 infants with urine leukocyte counts above 9 cells/hpf. These differences translated to a relative risk of ...