Example 4

A sample volume of creatinine sample of 300 uL is placed on the electrode having the MB-FeCl3 receptor of 0.6 mg and then the peak reduction current value is observed from cyclic voltammogram by varying a potential window from 0.6 V to −1.0 V, with scan rate of 0.1 V/sec in CHI-Electrochemical workstation. The value of peak reduction current is noted 110 μA. The presence of this current value is searched in the Table 2 and the corresponding concentration of urine creatinine is obtained is 373 mg/dL.

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