| Antibiotic | Pre Dose | Post Dose | Comments | Performing Lab | Epic Test Code |
| Gentamicin (once daily) | Not required | 6-14 hours | Urban & Craig nomogram | Blood Sciences, RDUH | LAB27 |
| Tobramycin | Not required | 6-14 hours | Blood Sciences, RDUH | LAB37 | |
| Gentamicin (Endocarditis dosing) | 48 hours | 1-2 hours | See MicroGuide | Blood Sciences, RDUH | LAB27 |
| Vancomycin | 48 hours | Not required | See MicroGuide | Blood Sciences, RDUH | LAB40 |
| Antibiotic | Pre Dose | Post Dose | Comments | Performing Lab | Epic Test Code |
| Amikacin | 48 hours | 1-2 hours | Southmead Hospital | LAB145 | |
| Netilmicin | 48 hours | 1-2 hours | Southmead Hospital | LAB9286 | |
| Itraconazole | 7 days | Not required | Southmead Hospital | LAB9282 | |
| Voriconazole | 5 days | Not required | Southmead Hospital | LAB9294 | |
| Posaconazole (suspension only) | 5 days | Not required | Southmead Hospital | LAB9287 | |
| Teicoplanin | 48 hours | Not required | Southmead Hospital | LAB9292 |
| Antibiotic | Pre Dose | Post Dose | Comments | Performing Lab | Epic Test Code |
| Acyclovir | 7 days | 1-2 hours | Southmead Hospital | LAB9266 | |
| Ciprofloxacin | 7 days | 1-2 hours | Southmead Hospital | LAB9270 | |
| Colistin | 7 days | Not required | Southmead Hospital | LAB9272 | |
| Cycloserine | 7 days | 3-4 hours | Southmead Hospital | LAB9274 | |
| Daptomycin | 7 days | 1-2 hours | Southmead Hospital | LAB9275 | |
| Ethambutol | 7 days | 2 hours | EDTA blood | Cardiff Toxicology lab | LAB9276 |
| Flucloxacillin | 7 days | 1-2 hours | Southmead Hospital | LAB9277 | |
| Flucytosine | 7 days | 1-2 hours | Southmead Hospital | LAB9278 | |
| Ganciclovir | 7 days | 1-2 hours | Southmead Hospital | LAB9279 | |
| Isoniazid | 7 days | 2 hours | EDTA blood | Cardiff Toxicology lab | LAB9281 |
| Linezolid | 7 days | 1-2 hours | Southmead Hospital | LAB9284 | |
| Penicillin | 7 days | 1-2 hours | Send on ice | Southmead Hospital | LAB9397 |
| Rifampicin (oral) | 7 days | 1, 2 & 4 hours | Southmead Hospital | LAB9288 | |
| Rifampicin (oral) | 2 hours | EDTA blood | Cardiff Toxicology lab | LAB9288 | |
| Streptomycin | 48 hours | 1-2 hours | Southmead Hospital | LAB9290 | |
| Sulphamethoxazole (In Co-trimoxazole) | 7 days | 1-2 hours | Southmead Hospital | LAB9398 | |
| Trimethoprim (In Co-trimoxazole) | 7 days | 1-2 hours | Southmead Hospital | LAB9399 |
