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Detection of PSA spiked in human serum samples by the colorimetric immunoassay (n=4).
| Serum sample number | Standard PSA concentration (ng·mL−1) | Color changes | UV-Vis detection result (ng·mL−1) | Recovery (%) |
|---|---|---|---|---|
| Control | 0 |
|
||
| No. 1 | 4.0 |
|
3.65±0.20 | 91.3±5.0 |
| No. 2 | 8.0 |
|
7.32±0.36 | 91.6±4.6 |
| No. 3 | 16.0 |
|
14.9±0.90 | 93.1±5.7 |
