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PaperClot: A Simple Smartphone-Based Point-of-Care Blood Test for Measuring Blood Clotting INR

PaperClot Prototype Development and Validation of a Tissue Factor (TF) and Calcium Chloride Enhanced Capillary Blood-Based, Artificial Intelligence (AI) Assisted Prothrombin Time (PT) International Normalized Ratio (INR) Point-of-Care Testing System using smartphone.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2026/02/104007
Enrollment
120
Registered
2026-02-16
Start date
Unknown
Completion date
Unknown
Last updated
2026-03-02

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

Conditions

None listed

Interventions

Intervention1: Nil: Nil Control Intervention1: Baseline (Pre-treatment Assessment): Participants serve as their own control. Baseline PBAC, BAT, and quality-of-life scores prior to treatment initiatio

Sponsors

Dr Sreeraj V
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 20 healthy volunteer and 100 patients on warfarin or Actorm.

Exclusion criteria

Exclusion criteria: Patients on anticoagulants other than warfarin

Design outcomes

Primary

MeasureTime frame
Correlation and agreement between PaperClot-derived estimate/model output and laboratory PT/INR at the same visit, using Pearson correlation and Bland Altman agreement methods.Timepoint: Baseline - Day 0 (simultaneous finger-prick testing and venous blood sampling during the same visit).—

Secondary

MeasureTime frame
Diagnostic discrimination performance using ROC analysis.Timepoint: Single time point at the time of testing (same visit).—

Countries

India

Contacts

Public ContactDr Sreeraj V

Amala Institute of Medical Sciences,Thrissur,Kerala.

sreerajfleming@gmail.com08826752985

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Mar 14, 2026