Table 2. Analytical Results of 8-Oxo-dG Detection in the Spiked Urine Samples from our Portable Low-Cost Device Based on the 38-nt and 66-nt Aptasensors.

spiked 8-oxo-dG (nM)	amount found ± S.D. (nM)	recovery ± RSD (%)
38-nt aptasensor
0	24.2 ± 3.0
20	43.5 ± 4.9	96.3 ± 11.3
40	68.6 ± 2.7	110.9 ± 4.0
66-nt aptasensor
0	24.3 ± 2.2
20	48.2 ± 4.0	119.7 ± 8.3
40	63.1 ± 3.4	97.2 ± 5.4