How does your facility measure extended half-life factor VIII concentrate therapy?

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One-stage clot-based FVIII assay
46% (11 votes)
Two-stage chromogenic FVIII assay
42% (10 votes)
We don't measure, assays are unreliable
8% (2 votes)
Alternate method; see my comment
4% (1 vote)
Total votes: 24