Due to the different labelled potencies of Xyntha and ReFacto AF (1 IU: 1.38 IU), please ensure that you have selected the correct concentrate that your patient has infused with (Xyntha vs. ReFacto AF). WAPPS-Hemo will take into account potency conversion and you do not need to make any adjustments to your measurements.
For more information about this conversation, please click here. The link will take you to the Pfizer website regarding instructions on the assay conversation.
For a link to the most updated full list of lab test assay recommendations, please click here.