title: A rapid, enzymatic method for the determination of chloramphenicol in serum.
abstract: A simple, rapid assay of serum chloramphenicol has been developed which combines the specificity of the enzyme chloramphenicol acetyltransferase with the convenience of a colorimetric detection system. The assay is linear over the drug concentration range 5-200 microM (1.5-65 mg/l) and therefore is suitable for detection below and above the therapeutic range (31-62 microM, 10-20 mg/l with potential toxicity above 75 microM, 24 mg/l). This method does not detect the microbiologically inactive succinate or palmitate pro-drugs of chloramphenicol and evidence suggests that the major metabolite, chloramphenicol glucuronide also is not detected. Good correlation with an HPLC method has been achieved (r = 0.9860). The assay is based on a two reagent system with very simple methodology, the only instrumentation required being a spectrophotometer. However, the assay could be adapted to run on a range of discrete analysers.
authors.affiliation: Department of Clinical Biochemistry, Addenbrooke's Hospital, Cambridge, UK.
authors.forename: H C
authors.initials: HC
authors.lastname: Morris
authors.forename: J
authors.initials: J
authors.lastname: Miller
authors.forename: R S
authors.initials: RS
authors.lastname: Campbell
authors.forename: P M
authors.initials: PM
authors.lastname: Hammond
authors.forename: D J
authors.initials: DJ
authors.lastname: Berry
authors.forename: C P
authors.initials: CP
authors.lastname: Price
mesh_terms: D001663:Bilirubin / Q000032:analysis; D002701:Chloramphenicol / Q000097:blood* / Q000627:therapeutic use; D015500:Chloramphenicol O-Acetyltransferase / Q000032:analysis*; D003124:Colorimetry; D006801:Humans; D007202:Indicators and Reagents; D007676:Kidney Failure, Chronic / Q000188:drug therapy; D013056:Spectrophotometry, Ultraviolet
chemical_list: D007202:Indicators and Reagents; D002701:Chloramphenicol; D015500:Chloramphenicol O-Acetyltransferase; D001663:Bilirubin