Table 1.
EC50 values generated from ELISA curves, with corresponding percentage of antibody cross-reactivity. EC50 values were determined from individual curves (n = 4 for STX, neoSTX, GTXs and n = 6 for dcSTX), and results are presented as average ppb ± standard deviation. The cross-reactivity of another PSP ELISA from Abraxis, as reported in their kit instructions, is provided for comparison [21].
| PSP Congener | EC50 (in ppb) | SeaTox Cross-Reactivity | Abraxis Cross-Reactivity |
|---|---|---|---|
| STX | 0.489 ± 0.031 | 100% | 100% |
| neoSTX | 0.608 ± 0.032 | 80.4% | 1.3% |
| GTX 1/4 | 3.694 ± 0.352 | 13.2% | 0.2% |
| GTX 2/3 | 3.309 ± 1.144 | 14.8% | 23% |
| dcSTX | 49.15 ± 43.58 | 9.9% | 29% |