Open-label

Everyone knows which treatment is being given — nothing is hidden.

Learning 

What it means

An open-label study is one where both the participant and the study team know exactly which treatment the participant is receiving.

Why it matters if you take part

You will know what you are getting. This is the most common arrangement in trial records, and it is often used when hiding the treatment would be impractical or unsafe.

What it looks like in practice

The registry record will say "Masking: NONE".

Related terms

Trials recruiting now that are open-label

1,549 recruiting trials in our Canadian corpus are open-label.

This explains how clinical research works. It is not medical advice and does not describe any specific condition or treatment. Only a trial site can determine whether someone can take part in a study.