. 2022 May 31;12(6):379. doi: 10.3390/bios12060379

Table 2.

Analyses of real biological samples with an Ag₂O-doped ZnO NSs/GCE sensor probe by the electrochemical method.

Sample	Added L-Aspartic Conc. (µM)	Measured L-Aspartic Conc. by Ag₂O Doped ZnO NSs/GCE (µM) ^a			Average Recovery ^b (%)	RSD ^c (%) (n = 3)
Sample	Added L-Aspartic Conc. (µM)	R1	R2	R3	Average Recovery ^b (%)	RSD ^c (%) (n = 3)
Human serum	45	44.23	44.15	43.96	98.03	0.60
Mouse serum	45	43.76	43.89	44.17	97.64	1.20
Rabbit serum	45	42.93	43.27	44.07	96.49	1.02

^a Means of three repeated determination (signal to noise ratio of 3) with Ag₂O-doped ZnO NSs/GCE. ^b Concentration of L-aspartic acid determined/concentration taken. (Unit: µM). ^c Relative standard deviation value indicates precision among three repeated measurements (R1, R2, R3).