I have done ELISA assay and Quinine/HP assay to measure a specific glycated protein called Carboxymethyllysine (CML) and collagen content of the same sample respectively. Which unit is best to report the ratio of CML over collagen? in previous literature both way are reported as (ng CML / mg total protein) or umol CML / mmol Collagen. I was wondering what are the specific differences to report in these two different units. and which would be more accurate in terms of the protein samples? Thanks