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Comparison of the performance of the biosensor modified either with PVA or BSA as a blocking agent
| Blocking agent | Sensitivity [Ω decade-1] | Linear range [orders of magnitude] | FET/ASF signal ratio a | RSD [%] |
|---|---|---|---|---|
| BSA | 790 ± 40 | 3 | 1.5 ± 0.2 | 8.4 ± 5.8 |
| PVA | 550 ± 20 | 7 | 3.5 ± 0.5 | 4.6 ± 3.7 |
– calculated by dividing the sensitivity of the device for FET to the sensitivity of the biosensor for ASF
All measurements were performed with three independent biosensor devices
