> ## Documentation Index
> Fetch the complete documentation index at: https://glossary.micahealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Investigator

A researcher who helps conduct a clinical study, including roles like principal investigator, sub-investigator, or study director.

## Related terms

<CardGroup cols={3}>
  <Card title="Intervention model" href="intervention_model" />
</CardGroup>

[*Source*](https://clinicaltrials.gov/study-basics/glossary)