open-label

adjective
open-la·bel | \ˌō-pən-ˈlā-bəl \

Definition of open-label 

: being or relating to a clinical trial in which the treatment given to each subject is not concealed from either the researchers or the subject an open-label multicenter study — compare double-blind, single-blind

First Known Use of open-label

1979, in the meaning defined above

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The first known use of open-label was in 1979

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More Definitions for open-label

open-label

adjective

Medical Definition of open-label 

: being or relating to a clinical trial in which the treatment given to each subject is not concealed from either the researchers or the subject long-term open-label studies — compare double-blind, single-blind

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