| Restaurant | Total no. samples | Gluten concentration (ppm) | |||
| <5 | 5 - 19 | >20 | Proporción > 20 ppm | ||
| A | 18 | 7 | 7 | 4 | 22.0 |
| B | 16 | 9 | 4 | 3 | 18.75 |
| C | 17 | 16 | 1 | 0 | 0 |
| D | 18 | 14 | 4 | 0 | 0 |
| E | 17 | 14 | 3 | 0 | 0 |
| Total | 86 | 60 | 19 | 7 | 8.14 |