This is a Proprietary Laboratory Analyses (PLA) code, meaning that the code applies to only one unique lab test made by a specific manufacturer or performed by a specific lab. Report 0281U only for Versiti™ VWF Propeptide Antigen from Versiti™ Diagnostic Laboratories using a plasma specimen for an enzyme–linked immunosorbent assay (ELISA) to evaluate levels of the von Willebrand factor (VWF) propeptide antigen.
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