Highly Sensitive Amperometric α-Ketoglutarate Biosensor Based on Reduced Graphene Oxide-Gold Nanocomposites

Table 2

Recovery test of α-KG in human serum samples (n = 3).

Sample	Added (μM)	Found (μM)^a	Recovery (%)	RSD (%)
1	100	102.4	102.4	4.5
2	200	197.6	98.8	3.8
3	300	293.7	97.9	4.3

^aAverage of three measurements.