in view of the present importance of plasma bilirubin levels in the diagnosis and treatment of jaundiced subjects , six analytical procedures have been studied , each chosen as far as possible , as a representative of a group of methods each embodying different principles.a spectrophotometric method ( white , haidar , and reinhold , 1958 ) and five diazo coupling procedures ( jendrassik and grof , 1938 ; powell , 1944 ; perryman , richards , and holbrook , 1957 ; stoner and weisberg , 1957 ; lathe and ruthven , 1958 ) were investigated , and the results obtained by carrying out duplicate analyses by different methods on 54 stored and 64 fresh plasmas or sera are presented and discussed in this paper .
C0032105
plasmas
C0229671
sera