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Table 7 Results of percent recovery of MFH in the analysis of spiked human urine

From: Application of two charge transfer complex formation reactions for selective determination of metformin hydrochloride in pharmaceuticals and urine

Method Spiked concentration, μg mL-1 Founda ± SD % Recovery ± RSD
PCA method 200.00 197.43 ± 1.09 98.72 ± 0.72
DDQ method 40.00 39.15 ± 0.92 97.87 ± 1.05
  1. aAverage of five determinations; SD is standard deviation