Definitive methods--reference methods (absolute methods?): their important impact on clinical chemistry.
D001774:Blood Chemical Analysis / Q000592:standards; D002623:Chemistry Techniques, Analytical / Q000379:methods; D002624:Chemistry, Clinical / Q000379:methods*; D002784:Cholesterol / Q000097:blood; D006452:Hemoglobinometry / Q000379:methods; D011786:Quality Control
D002784:Cholesterol