INTERVAL Study: To Determine Whether the Interval Between Blood Donations in England Can be Safely and Acceptably Decreased
Summary
The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →
Investigators
The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.
- David Roberts
University of Oxford
Principal Investigator - John Danesh
University of Cambridge
Principal Investigator
A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.
Sites
25 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.
- Brentwood Blood Donor Centre
Brentwood, Essex, United Kingdom
- Edgware Blood Donor Centre
Edgware, Middlesex, United Kingdom
- Birmingham Blood Donor Centre
Birmingham, United Kingdom
- Bradford Blood Donor Centre
Bradford, United Kingdom
- Bristol Blood Donor Centre
Bristol, United Kingdom
- Cambridge Blood Donor Centre
Cambridge, United Kingdom
- Gloucester Blood Donor Centre
Gloucester, United Kingdom
- Lancaster Blood Donor Centre
Lancaster, United Kingdom
- Leeds Blood Donor Centre
Leeds, United Kingdom
- Leeds City Centre Blood Donor Centre
Leeds, United Kingdom
- Leicester Blood Donor Centre
Leicester, United Kingdom
- Liverpool Blood Donor Centre
Liverpool, United Kingdom
- Tooting Blood Donor Centre
London, United Kingdom
- West End Blood Donor Centre
London, United Kingdom
- Luton Blood Donor Centre
Luton, United Kingdom
- Manchester Norfolk House Blood Donor Centre
Manchester, United Kingdom
- Manchester Plymouth Grove
Manchester, United Kingdom
- Newcastle Blood Donor Centre
Newcastle, United Kingdom
- Nottingham Blood Donor Centre
Nottingham, United Kingdom
- Oxford Blood Donor Centre
Oxford, United Kingdom
- Plymouth Blood Donor Centre
Plymouth, United Kingdom
- Poole Blood Donor Centre
Poole, United Kingdom
- Sheffield Blood Donor Centre
Sheffield, United Kingdom
- Southampton Blood Donor Centre
Southampton, United Kingdom
- Stoke Blood Donor Centre
Stoke, United Kingdom
Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.
Drugs studied
No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →
Registration & key dates
Registry attributes as recorded on the ClinicalTrials.gov study record.
- Start
- 30 Jun 2012
- Primary completion
- 30 Jun 2016
- Completion
- 31 Dec 2016
- Last update posted
- 10 Jun 2015
- Registered enrollment
- 50,000
- Registry id
- NCT01610635
Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.