Compositions and methods for determining the presence or concentration of glucose in a sample which may also contain an alpha-hydroxy acid or a beta-diketone. The method uses a compound having at least two recognition elements for glucose, oriented such that the interaction between the compound and glucose...http://www.google.de/patents/US6800451?utm_source=gb-gplus-sharePatent US6800451 - Detection of glucose in solutions also containing an alpha-hydroxy acid or a beta-diketone