STA SYSTEM CONROL N + P (ref. 00678)
A positive bias was confirmed to exists on the STA - Unicalibrator levels with STA - Deficient IX and STA - Deficient VIII when compared to the International Standard (IS) for factor VIII or IX. This bias is also observed on several External Quality Assessment (EQA) results.
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https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=Z-0738-2020