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Oxford University Hospitals NHS Foundation Trust
Clinical Biochemistry

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Specimen requirements

Sample type: Plasma (Lithium Heparin)

Collection requirements: No special requirements


Price on application

Turnaround time

Please see Turnaround times

Analytical method


Analysis undertaken at these site(s)

John Radcliffe Hospital

Reference intervals

If continuing Gentamicin beyond 48 hours:

Once daily dosing (5-7mg/kg): interpret level using Nomogram in 'Antibiotic Guidelines, Intravenous Gentamicin in Adults' on the Clinical Intranet or at:

Dosing in renal impairment (3mg/kg): repeat dose when TROUGH is less than 2 mg/L

In endocarditis, if synergy required

Trough less than 1 mg/L
Peak (1 hour POST dose) 3-5 mg/L