Method for the preparation of a dry composition comprising a stable ABTS radical

摘要

The invention is in the field of medical and nutritional diagnostics. It provides means and methods for determining the antioxidant status of a sample. The invention provides a method for obtaining a stable radical ABTS in solid form wherein ABTS is dissolved in a buffered aqueous solution at a pH between 7 and 8, converted into radical ABTS, frozen and freeze dried.