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Jandreski, M.A. et al.

Clinical measurement of serum amiodarone and desethylamiodarone by using solid-phase extraction followed by HPLC with a high-carbon reversed-phase column.

We describe a rapid, simple HPLC method routinely used in our clinical laboratory for determining amiodarone and its metabolite desethylamiodarone. These compounds are released from serum proteins by pretreatment with an acidic solution and then extracted onto a C2 reversed-phase clean-up column. After elution from the extraction column, the compounds are separated and quantified by HPLC with a C18 reversed-phase column and spectrophotometric detection. The standard curves for the drug and metabolite are linear up to 20.0 mg/L, with a lower limit of detection of 0.16 mg/L. The CVs for intra-assay precision were 5.0% at 0.58 mg/L and 2.9% at 5.96 mg/L; for inter-assay precision, they were 9.6% at 0.52 mg/L and 6.1% at 2.09 mg/L. Lipemia, hemoglobin, and bilirubin up to 300 mg/L do not interfere with this assay. None of > 550 cardiac patients' samples tested contained a compound that interferes with this assay.[1]

References

Clinical measurement of serum amiodarone and desethylamiodarone by using solid-phase extraction followed by HPLC with a high-carbon reversed-phase column. Jandreski, M.A., Vanderslice, W.E. Clin. Chem. (1993) [Pubmed]

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