The present invention relates to a method for mass spectrometry analysis using a mass spectrometer and a chromatography system. The ultrafast glucose analysis method according to the present invention is characterized in that sugar extraction, purification and labeling are sequentially carried out on a 96-well plate, and specific sugar labeled with isotopes is mass analyzed using MALDI-TOF MS and UPLC, The cost is remarkably reduced, and there is an effect that the relative quantitative determination and the absolute quantitative determination of the sugar in the glycoprotein are enabled.
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