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PT/INR Reference Interval IN Healthy Volunteers

A Prospective, Single-Center Study, in Healthy Volunteers to Establish a PT/INR Reference Interval for the Microvisk INR Test System

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT02319109
Acronym
REF01
Enrollment
154
Registered
2014-12-18
Start date
2014-12-31
Completion date
2015-01-31
Last updated
2015-01-22

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

Conditions

Healthy

Brief summary

This is a prospective, single-center study in healthy volunteers to establish a PT/INR reference interval for the Microvisk International Normalized Ratio (INR) Test System. The primary objective of this study is to establish the reference interval for the measurement of prothrombin time (PT/INR) using the Microvisk INR Test System. The second objective is to evaluate the safety of the device.

Detailed description

Healthy volunteers who meet eligibility criteria, have been fully informed and provided written informed consent will be enrolled into this study. Each participant will be required to donate up to 3 finger stick samples for testing on one occasion. The maximum trial duration for each participant is one visit/occasion. This will be followed by a standard venipuncture for (1) a neutral tube (Red Top) for analysis by the on-test method, (1) one sodium citrate tube (Blue Top) for analysis by the comparative/reference laboratory method. Sample collection will take place within the clinic session. The maximum trial duration for each participant is one clinic session.

Interventions

None listed

Sponsors

Microvisk Technologies Ltd
Lead SponsorINDUSTRY

Study design

Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

1. Subject is considered a healthy volunteer 2. Subject is male or female, over 18 years of age 3. Subject is informed and has been given ample time and opportunity to think about his/her participation and has given his/her written informed consent 4. Subject agrees to have blood drawn (venipuncture) and finger stick

Exclusion criteria

1. Subject is unable to give informed consent 2. Subject is less than 18 years of age 3. Female subject is pregnant 4. Subject is on anticoagulant medication or other medication known to affect PT/INR assessment (e.g., warfarin, heparin) for a minimum of 28 days before enrolling in the trial 5. Subject has a medical condition known to affect PT/INR (e.g. vitamin K deficiency, disseminated intravascular coagulation, liver disease, decreased or defective factor I, II, V, VII, or X) 6. Subject has already taken part in the study

Design outcomes

Primary

MeasureTime frameDescription
INR value for normal population1 dayEstablish the INR value for the normal population

Secondary

MeasureTime frameDescription
Safety (Number of Participants with Adverse Events)1 dayNumber of Participants with Adverse Events as a Measure of Safety
Device Failure (number of device failures)up to 12 weeksOverall number of device failures to measure the robustness of system

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026