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Antibiotic Assays (Therapeutic Drug Monitoring)



Assays used to measure the concentration of certain antibiotics in the blood.



Specimen container

Gold Top Clotted (5ml)

How To Request On EPIC

For electronic requesting using EPIC (RDUH ONLY):

Search for: ‘”Antibiotic NameLevel‘ or the test code shown on this table: Full List of Antibiotic Assays

Special Instructions

Please send serum unless otherwise specified, and state DOSE, TIME OF LAST DOSE, and TIME SAMPLE TAKEN

Full List of Antibiotic Assays

For interpretation of levels, please refer to the Antimicrobial App or contact us to discuss


Turnaround Time

  • Gentamicin, Tobramycin and Vancomycin – within 24 hours
  • All other antibiotics  – 7-10 days

Further Information

For Patients:

Therapeutic Drug Monitoring – Lab Tests Online

For Healthcare professionals:

Microguide – Antimicrobial Guidance for RDUH

Antimicrobial Reference Laboratory | North Bristol NHS Trust

Toxicology Laboratory – Cardiff and Vale University Health Board

(Key words: Amikacin, Netilmicin, Itraconazole, Voriconazole, Posaconazole, Teicoplanin, Acyclovir, Ciprofloxacin, Colistin, Cycloserine, Daptomycin, Ethambutol, Flucloxacillin, Fluctosine, Ganciclovir, Isoniazid, Linezolid, Penicillin, Rifampicin, Streptomycin, Co-trimoxazole, Cotrimoxazole, Sulphamethoxazole, Trimethoprim)

Specimen Labelling Procedure
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