TABLE 1.

Sensitivity and specificity of the urine dipstick (Ketostix, Bayer) to detect the presence of acetoacetate in the urine at three different thresholds of ketosis, as defined by the blood β‐hydroxybutyrate concentrations shown in the left‐most column

Ketosis threshold	Sensitivity	Specificity
≥0.3mM	34.7 (95% CI, 28.4‐41.4)%	100 (95% CI, 92.0‐100.0)%
≥0.5mM	52.2 (95% CI, 43.5‐60.7)%	96.8 (95% CI, 92.0‐99.1)%
≥1.0mM	76.5 (95% CI, 58.8‐89.3)%	78.2 (95% CI, 72.2‐83.3)%