Direct comparison
Broad Consent Vs Specific Consent: Key Differences & Comparison | CASRAI
Broad consent permits future, unspecified research within a governance framework, as in biobanks; specific consent authorises one defined study and purpose. The two differ in scope, governance, and control.
Side-by-side comparison
| Dimension | Broad consent | Specific consent |
|---|---|---|
| Scope | Future, unspecified research within a framework | One defined study and stated purpose |
| GDPR / ethics basis | Consent plus a governance framework; ethics approved | Consent for the named study; ethics approved |
| Re-contact | Often avoids re-consent for each new study | New research generally requires fresh consent |
| Governance | Ongoing oversight, often an access committee | Tied to the single study's protocol |
| Typical context | Biobanks and long-running cohort studies | A single clinical trial or defined project |
| Participant control | Broader permission given upfront; trust in governance | Fine-grained control over each specific use |
| Withdrawal | Withdrawal possible, managed through governance | Withdrawal from the defined study |
| Oversight | Research ethics committee plus access governance | Research ethics committee for the study |
| UK tissue context | Storage and future use under HT Act governance | Use for the consented purpose under HT Act |
Common questions
FAQ
Is broad consent the same as no consent or a blank cheque?+
No — broad consent is still informed consent given for future research, but within a defined governance framework with ongoing oversight, often including an access committee. Participants are told how decisions about reuse will be made, rather than agreeing to anything without limits.
When is broad consent preferred over specific consent?+
It is typically used by biobanks and long-running cohorts, where samples and data may support many future studies that cannot be named in advance. Re-consenting for every new study would be impractical, so broad consent plus strong governance enables responsible reuse.
How does dynamic consent relate to broad consent?+
Dynamic consent is a more interactive form of broad consent. Rather than a single upfront permission, participants engage over time — often through digital tools — to review and update their choices as new research is proposed, giving more ongoing control while still supporting reuse.
Going deeper
