title: A method to examine the need for duplicate testing of common coagulation tests.
abstract: A statistical protocol for evaluating the need for duplicate coagulation testing was developed. It requires at least 32 sets of duplicate prothrombin times or partial thromboplastin times over the expected range of results. In addition to the statistical procedures, clinical evaluation of the duplicates is required.
authors.affiliation: Department of Hospital Laboratories, Duke University Medical Center, Durham, North Carolina.
authors.forename: J A
authors.initials: JA
authors.lastname: Koepke
authors.forename: C E
authors.initials: CE
authors.lastname: McLaren
authors.forename: A
authors.initials: A
authors.lastname: Wijetunga
authors.forename: B
authors.initials: B
authors.lastname: Houwen
mesh_terms: D006801:Humans; D010314:Partial Thromboplastin Time; D011517:Prothrombin Time; D012044:Regression Analysis; D015203:Reproducibility of Results