---
id: "isrctn_number"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["medical", "science"]
langs: ["common"]
quality: 78
url: "http://registry.apicrafter.io/datatype/isrctn_number"
---

# ISRCTN registration number (`isrctn_number`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Registration number of a study in the ISRCTN registry, a primary clinical study registry recognised by the WHO International Clinical Trials Registry Platform and by medical journal editors. It is ISRCTN followed by digits; the name first stood for International Standard Randomised Controlled Trial Number.

- Personal data (PII): no
- Categories: Medical/pharma identifiers (medical), Scientific (science)
- Countries: global
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^ISRCTN\d+$
```

## Examples

- `ISRCTN10175490` — Effects of a supplement on cognitive function and brain activity in middle-aged and older healthy adults; Bioregistry example
- `10175490` (invalid example) — Number without the ISRCTN prefix

## Mappings

- bioregistry: `isrctn`

## Sources

- doc: <https://www.isrctn.com/>
- other: <https://bioregistry.io/registry/isrctn>

## Quality

Score 78/100. Missing: second example, translation, detector coverage.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/isrctn_number.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/medical/isrctn_number.yaml>