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Table 8 Determination of methylphenidate in spiking urine sample using the proposed sensors

From: New potentiometric sensors for methylphenidate detection based on host–guest interaction

Urine sample Sensor 1 Sensor 2 Sensor 3 HPLC
Recovery, % 98.5 98.0 97.5 99.0
SD 0.084 0.092 0.081 0.077
RSD, % 3.2 3.5 3.1 2.9