Pathology Handbook

Antibiotic Assay (not Gentamicin, Vancomycin or Amikacin)



Clinical Indications


Test Includes

Assay for antibiotics other than gentamicin, vancomycin and amikacin

Request Form

ICE request


On request during routine working hours. Samples are sent to reference laboratories.

Specific Criteria

Please state the date and time of sample collection; antibiotic type; date, time and amount of antibiotic dose

Turnaround Time

Samples will usually be sent to a Reference Laboratory by overnight courier and the test performed on the day they receive the sample.  The results will be telephoned to the Microbiology Department and then entered on the Southend Hospital computer system


Serum, Red top or gold top (SST) tube


7 ml


 Vacutainer red top


Samples MUST be transported to laboratory immediately

Causes for Rejection

Unlabelled / inadequately labelled sample
Delay in sample reaching laboratory
Failure to meet specific criteria regarding sample collection information etc.

Reference Range


Lab Handling

Samples should be sent to the Reference Laboratory on the day of receipt.  If this is not possible the requesting clinician must be informed