Aliquots of plasma with a prolonged PT and prolonged APTT ar…
Aliquots of plasma with a prolonged PT and prolonged APTT are mixed using various ratios of patient plasma and normal plasma. All samples are incubated at 37 C and tested at 10-, 30-, and 60-minute intervals. The PT and APTT results on all of the mixing studies are not corrected. These results would indicate the presence of: