Polysulfated carbohydrates such as heparin (HP) and heparan sulfate (HS) are not easily amenable to usual ultraviolet matrix-assisted laser desorption/ionization-mass spectrometry (UV-MALDI)-MS analysis due to the thermal lability of their O- and N-SO3 moieties, and their poor ionization efficiency with common crystalline matrices.
Albumin was measured by the automated HABA-dye technique using sera containing increasing quantities of either free or conjugated bilirubin and the results were compared with those obtained by electrophoresis on cellulose acetate