3.5. Human serum samples measurementTo verify the reliability of the sensor, the sensor is used for deter-mination of the concentration of glucose in human blood serumsamples. The claimed glucose concentration was detected in hos-pital by standard method. The results are presented in Table 3. Therecoveries for the standards added are 99.00–100.50%. The resultsindicating that sensor based on Pt0.7Co0.3/C could be used for mea-suring the glucose in real samples.