> For the complete documentation index, see [llms.txt](https://doc.duaer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/getting-started/biostudies.md).

# Search BioStudies in Duaer

In Duaer, search BioStudies multi-omics studies with Duaer Data. One successful search uses 1 credit. This page includes the full English call skill.
## What you get

BioStudies in the Duaer data market returns study accessions, titles, types, and release dates. One successful search uses 1 credit.

Add the node from the [Duaer Data category](/getting-started/duaer-data.md) (BioStudies), or copy the skill on the [data market](/getting-started/data-market.md). Related: [GEO](/getting-started/geo.md), [PRIDE](/getting-started/pride.md).

## Search on the canvas

1. Open the node creator, select Duaer Data, then BioStudies.
2. Enter Words (a new node starts with diabetes), or a Study ID.
3. Limit defaults to 10, max 20. Select Execute step.

A successful search uses 1 credit. Production deliverables land in the [data pool](/getting-started/data-pool.md).

## Call the API

- GET https://api.duaer.com/v1/data/biostudies?...
- Authorization: Bearer <Duaer key>
- words or id is required.

For keys, refer to [Authentication for the Duaer public API](/api/authentication.md). Below is the same English call skill as Copy skill.

## Call skill

Same text as Copy skill on the Duaer data market. Keep it English.

```
---
name: duaer-biostudies
description: >-
  Search multi-omics studies in BioStudies through Duaer.
  One successful search uses 1 Duaer credit.
---

# Duaer BioStudies

Search multi-omics studies in BioStudies through Duaer with a Duaer key.

## Call

`GET https://api.duaer.com/v1/data/biostudies?words=diabetes&limit=10`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Provide `words` or `id`.

- `words` — study words, such as diabetes.
- `id` — optional. BioStudies accession such as S-EPMC7532821.
- `limit` — optional. From 1 to 20. Default 10.

## Result

Each item has `source`, `title`, `url`, `summary`, `studyId`, `studyType`, `authors`, `releaseDate`, `description`, and `dataSource`.
Related geo: https://skills.duaer.com/geo.md.
Related pride: https://skills.duaer.com/pride.md.

## Credits

One successful search uses 1 credit.
An empty search, a failed search, a compound that matches nothing, or no remaining credits uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

```
## Questions

### How do Duaer BioStudies, GEO, and PRIDE differ?

GEO emphasizes expression datasets. PRIDE emphasizes mass-spec proteomics projects. BioStudies is the EBI multi-omics study archive entry point.

## Related

- [Search GEO in Duaer](https://doc.duaer.com/getting-started/geo.md)
- [Search PRIDE in Duaer](https://doc.duaer.com/getting-started/pride.md)
- [Search expression in Duaer](https://doc.duaer.com/getting-started/expression.md)
- [Use the Duaer data market](https://doc.duaer.com/getting-started/data-market.md)