Norfolk Platelet And Stroke Study (PASS)

Investigation of the clinical utility of platelet function testing following stroke and transient ischaemic attack: a non-randomised observational clinical laboratory study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN09053426

Enrollment

Registered

2011-07-18

Start date

2010-02-01

Completion date

Unknown

Last updated

2017-04-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stroke Circulatory System Stroke

Interventions

1. The observations consist of a blood test to assess platelet function following stroke/TIA 2. Follow-up length: 12 months

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Over the age of 18 years old (we are a department that treats adult patients) 2. Patient admitted under the care of the department of medicine with a stroke/transient ischaemic attack (TIA) at the Norfolk and Norwich Hospital 3. Within 72 hours of admission with a stroke/TIA 4. Must have received one dose of at least 75 mg of aspirin orally before testing

Exclusion criteria

Exclusion criteria: 1. Unfit for procedure (phlebotomy) 2. Patients not given aspirin

Design outcomes

Primary

Measure	Time frame
Platelet function result at time of stroke/TIA	—

Secondary

Measure	Time frame
Measured at at 90 days and 1 year: 1. Re-stroke 2. Other vascular event 3. Death	—

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026