Figure 1From: "Random" gentamicin concentrations do not predict trough levels in neonates receiving once daily fixed dose regimens Derivation Cohort: "Random" Gentamicin Concentration v Time. The equation is given for the regression line which is the heavier of the two lines on the graph. The cut off line is the lighter and lower line (see Text). Safe 24 hr concentration = ≤ 1 mg/l. High 24 hr concentration = >1 mg/l.Back to article page