| Resistance gene | Amplicon size (bp) | Oligosequence | Target Source |
| (1) TEM | 931 | F = 5’TCCGGTCATGAGACAATAACC3’ R = 5’TTGGTCTGACAGTTACCAATGG3’ | TEM1-TEM190 |
| (2) SHV | 868 | F = 5’TGGTTATGCGTTATATTCGCC3’ R = 5’GGTTAGCGTTGCCAGTGCT3’ | SHV1-SHV63 |
| (3) OXA-2 | 478 | F = 5’AAGAAACGCTACTCGCCTGC3’ R = 5’CCACTCAACCCATCCTACCC3’ | OXA1-OXA15 |