Research Article

Dried Blood Spot Sampling with LC-MS Analysis for Routine Therapeutic Caffeine Monitoring in Neonates

Figure 4

Matrix effect observed for caffeine at two concentrations in FTA Elute DBS extract, FTA Elute paper extract, 903 paper DBS extract, and FTA Elute DBS extract containing IS. Results are presented as a percentage of the peak area observed in pure solvent .
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