Potential falsely low activated partial thromboplastin time (aptt) results were obtained on five different patient samples on a bcs xp system using pathromtin sl reagent.A discordant, falsely elevated prothrombin time (pt) result was obtained on one patient sample on a bcs xp system using dade innovin reagent.A potential discordant, falsely low d-dimer result was obtained on one patient sample on a bcs xp system using innovance d-dimer reagent.The discordant results were not reported to the physician(s).The samples were all repeated for the respective assay and the correct repeat results were reported to the physician(s).The customer did not provide the actual correct result for some of the patient samples.There are no reports of patient intervention or adverse health consequences due to the discordant activated partial thromboplastin time (aptt), prothrombin time (pt), and d-dimer results.
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