Question: False-positive DAT results are most often associated with: a. Use of refrigerated, clotted blood sample in which complement components coat RBCs in vitro b. A

False-positive DAT results are most often associated with:

a. Use of refrigerated, clotted blood sample in which complement components coat RBCs in vitro

b. A recipient of a recent transfusion manifesting an immune response to recently transfused RBCs

c. Presence of heterophile antibodies from administration of globulin

d. A positive autocontrol caused by polyagglutination

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