> ## 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.

# Primary purpose

The main goal of a clinical trial, which can be treatment, prevention, diagnosis, supportive care, screening, health services research, basic science, or other purposes.

## Related terms

<CardGroup cols={3}>
  <Card title="Clinical study" href="clinical_study" />
</CardGroup>

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