title: Comparison of whole blood and plasma morphine.
abstract: Thirty paired samples of plasma and whole hemolyzed blood were obtained from patients undergoing surgery. Morphine concentrations were measured with the DPC serum morphine kit without prior treatment. In a regression analysis, the equation to the regression line was blood = 1.02 plasma + 1.0 ng/mL, and the correlation coefficient was 0.994. Radioimmunoassay screening of postmortem blood samples can be performed without prior sample treatment.
authors.affiliation: DPC European Research Institute, Oxford, United Kingdom.
authors.forename: C W
authors.initials: CW
authors.lastname: Hand
authors.forename: R A
authors.initials: RA
authors.lastname: Moore
authors.forename: J W
authors.initials: JW
authors.lastname: Sear
mesh_terms: D006801:Humans; D007432:Intraoperative Period; D009020:Morphine / Q000097:blood*; D011933:Reagent Kits, Diagnostic
chemical_list: D011933:Reagent Kits, Diagnostic; D009020:Morphine