Selected ion monitoring gas chromatography/mass spectrometry using uniformly labelled (13C)glucose for determination of glucose turnover in man

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Abstract
An optimized method is described for the mass fragmentographic determination of uniformly labelled (13C)glucose in human plasma using a butylboronic acid acetate derivative, and capillary gas chromatography. The advantages of the method are the ease and speed of the derivatization procedure, the small sample size, high precision (inter‐assay coefficient of variation 5.7%), and applicability of a relatively low‐cost mass spectrometer. This method allows glucose tracer experiments to be performed in man using the bolus injection technique, necessitating analysis of many samples. The results on glucose turnover obtained in a clinical experiment were in full agreement with previously published data.