Abstract: The present invention relates to screening methods for diabetes drugs. In particular, the invention concerns a method for identifying a drug against diabetes comprising determining the amount of glyoxylate in a test sample of a subject suffering from diabetes or a diabetes-like condition, wherein said test sample has been taken after the subject has been brought into contact with a compound suspected to be a drug against diabetes and comparing the determined amount to a reference amount for glyoxylate, whereby a compound being a drug against diabetes is identified.

Abstract: A method for diagnosing diabetes or a predisposition for diabetes is provided, which comprises determining the amount of glyoxylate in a test sample of a subject suspected to suffer from diabetes or to have a predisposition for diabetes and comparing said amount to a references, whereby diabetes or a predisposition for diabetes is to be diagnosed. Further, the use of glyoxylate or a detection agent for glyoxylate for diagnosing diabetes or a predisposition for diabetes is provided. Moreover, a device and a kit for diagnosing diabetes or a predisposition for diabetes are also provided.