22 Drotrecogin alfa (aktiveret) var hverken mutagent i en in vivo mikronukleustest med mus eller i en in vitro undersøgelse for kromosomafvigelser i lymfocytter fra perifert humant blod med eller uden metabolisk aktivering med rottelever.
Drotrecogin alfa (activated) was not mutagenic in an in vivo micronucleus study in mice or in an in vitro chromosomal aberration study in human peripheral blood lymphocytes with or without rat liver metabolic activation.