title: Letter: The ill-wind in direct analysis of plasma.
mesh_terms: D001322:Autoanalysis; D001774:Blood Chemical Analysis; D001798:Blood Proteins; D005069:Evaluation Studies as Topic; D006801:Humans; D008722:Methods; D009243:NAD; D010084:Oxidation-Reduction; D010949:Plasma / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D001798:Blood Proteins; D009243:NAD