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Colistin assay (pre dose only)

About This Test

Department: Virology and Molecular Microbiology


4ml clotted blood (1ml if paediatric), red top, State time of last dose and time of sample


Turnaround Time: 1-3 days

Assay to determine level of colistin in serum

Other Comments:

If processing is delayed, refrigeration is preferable to storage at ambient temperature. Delays of over 48 hours are undesirable

Measurement units: mg/L
Clinical decision points: Pre 2-4 mg/L
Nation et al. 2014. Lancet Infectious Diseases S1473-3099
Factors known to significantly affect results: Haemolysis
Reference Lab: Antimicrobial Reference Laboratory