Covalidation, between two

Method transfer is loosely defined as a process that qualifies a laboratory to use a test procedure or analytical method. According to this definition, any and all means of having a laboratory qualified would meet the criteria for transfer. The most common variations of method transfer are comparative testing, covalidation between two laboratories or sites, complete or partial method validation or revalidation, and the omission of formal transfer processes, sometimes termed the transfer waiver. ... 

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