Table 2.

Values of the PSA concentrations in the patients’ blood serum obtained by the aptasensor.

Nominal valuea (ng mL−1)	Obtained value (ng mL−1)	Bias (%)
5.31	5.2	−2.1
6.78	6.94	2.4
6.87	6.99	1.7
8.48	8.54	0.7
8.71	8.72	0.1
9.19	8.95	−2.6
10.92	11.01	0.8
12.31	11.88	−3.5
13.31	13.60	2.2
19.00	18.46	−2.8

^aNominal values were obtained by the immunoradiometric assay.