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pubmed:abstractText |
A mephenytoin test was carried out in 106 unrelated healthy Turkish volunteers. Racemic mephenytoin was coadministered with either debrisoquine or sparteine. The S/R mephenytoin ratio ranged from < 0.1 to 0.73 in 105 subjects, accordingly phenotyped as extensive metabolisers. One subject had an S/R mephenytoin ratio of 1.02, showing that he was a poor metaboliser of mephenytoin (0.94%, confidence interval 0.25% and 13.65%). In 48 subjects, the metabolic ratios of debrisoquine and sparteine were correlated significantly (rs = 0.61, P < 0.001).
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