Measurement of SAF
RS
During visits to the RS research center, SAF at the inner side of the dominant forearm was measured using an AGE Reader (Diagnoptics B.V., Groningen, The Netherlands) based on the fluorescent property of some AGEs. It is expressed in arbitrary units (A.U.) based on the ratio between the strength of emission and excitation light. The measurement was previously validated against liquid chromatography-mass spectrometry measurements [