Healthcare Glossary

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Open-label trial

A clinical trial where the drug or vaccine being tested is known to both researchers and participants. This contrasts with a single-blind trial, where the patient is unaware of the drug or vaccine, and a double-blind trial, where both researchers and patients are unaware.

See also:
Controlled trial
Randomised trial
Single-blind trial
Double-blind trial
Placebo-controlled trial
Clinical trial