Table 2 Comparison of SPR biosensor and electrochemiluminescence method for detection of AFP, CEA, and CYFRA 21-1.
sample | Electrochemiluminescence | SPR biosensor | Relative error (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|
AFP | CEA | CYFRA21-1 | AFP | CEA | CYFRA21-1 | AFP | CEA | CYFRA21-1 | |
1 | 8.6 | 5.2 | 6.8 | 7.8 | 5.5 | 6.3 | 9.3% | 5.8% | 7.3% |
2 | 264 | 6.6 | 7.3 | 247 | 3.1 | 6.7 | 6.4% | 9.0% | 8.2% |
3 | 774 | 23.4 | 6.7 | 813 | 21.2 | 6.2 | 5.0% | 9.4% | 7.5% |
4 | 7.4 | 583 | 7.4 | 6.8 | 632 | 8.1 | 8.1% | 8.4% | 9.5% |
5 | 4.8 | 126 | 6.4 | 3.4 | 137 | 5.8 | 8.3% | 8.7% | 9.4% |
6 | 4.2 | 6.7 | 69.7 | 3.8 | 6.1 | 73.8 | 9.5% | 8.9% | 5.9% |
7 | 12.1 | 9.2 | 257 | 10.9 | 10.1 | 274 | 9.9% | 9.8% | 6.6% |
8 | 341 | 5.9 | 11.8 | 365 | 6.4 | 12.7 | 7.0% | 8.5% | 7.6% |
9 | 15.7 | 37.5 | 458 | 14.3 | 41.2 | 499 | 8.9% | 9.8% | 9.0% |
10 | 4.3 | 3.6 | 5.1 | 2.0 | 3.3 | 4.6 | 9.3% | 8.3% | 9.8% |
