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  • Title: Evaluation of the powder-formulated enzyme multiplied immunoassay technique quantitative single test for gentamicin.
    Author: Berk LS, Imperio N, Eby WC.
    Journal: Ther Drug Monit; 1986; 8(1):111-4. PubMed ID: 3515638.
    Abstract:
    The usefulness of the enzyme multiplied immunoassay quantitative single test (EMIT QST) gentamicin assay was assessed for gentamicin analysis in patient sera. The EMIT QST reagents are in powder form in a single, premeasured vial and are run on a thermoregulated sample processor that controls mixing and timing steps. The results of the clinical evaluation showed that the standard curve was stable throughout a 26-day study period. Within-run precision on 20 replicates at 4.0 micrograms/ml yielded a coefficient of variation (CV) of 5.6%; between-run precision on 66 analyses at 6.0 micrograms/ml over a 152-day period yielded a CV of 4.0%. Mean recovery through the range of the standard curve with 10 spiked patient samples was 102%. Comparative analysis with radioimmunoassay of 95 patient samples showed a correlation of 0.97, with y = 0.93x - 0.03. It was concluded that the EMIT QST gentamicin assay is an appropriate, rapid methodology for patient gentamicin analysis.
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