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Table 3 Comparison of WBC detection by Gram stain and iQ200

From: Clinical usefulness of iQ200/iChem Velocity workstation for screening of urine culture

(Gram stain) / (iQ200)

> 105 CFU/mL (%)

(n = 248)

> 104 CFU/mL (%)

(n = 342)

(+)/(+)

97 (40.9)

113 (33.0)

(+)/(−)

21 (8.9)

28 (8.2)

(−)/(+)

89 (37.6)

103 (30.1)

(−)/(−)

30 (12.7)

98 (28.7)

  1. Gram stain results were available in 1810 samples
  2. The positive WBC result in gram stain is defined as ≥1/LPF; The positive WBC result in iQ200 is defined as ≥6/HPF