Related Experiment Video
Updated: Jul 20, 2026

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Measures of thrombosis and fibrinolysis
Brian G Choi1, Gemma Vilahur, Borja Ibanez
1Cardiovascular Biology Research Laboratory, Zena and Michael A. Wiener Cardiovascular Institute, Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1030, New York, NY 10029, USA.
Insights
Markers for thrombosis and fibrinolysis show promise for predicting cardiovascular heart disease risk. However, inconsistent lab methods hinder routine clinical use of these important acute coronary syndrome markers.
Area of Science:
- Cardiovascular Medicine
- Hematology
- Clinical Chemistry
Background:
- Acute coronary syndrome is understood as an atherothrombotic process.
- Research focuses on thrombosis and fibrinolysis markers for cardiovascular heart disease risk prediction.
- Current guidelines suggest fibrinogen, factor VII, PAI-1, t-PA, and vWF as potentially useful markers.
Purpose of the Study:
- To review the development and clinical utility of thrombosis and fibrinolysis markers for cardiovascular risk prediction.
- To address challenges in the routine clinical application of these markers.
- To provide guidance on laboratory handling, evidence of accuracy, and current clinical use.
Main Methods:
- Review of historical development of thrombosis and fibrinolysis assays.
- Analysis of laboratory methodologies and their impact on result interpretation.
- Evaluation of clinical trial data supporting the accuracy of these markers.
- Examination of current American Heart Association/American College of Cardiology guidelines.
Main Results:
- Despite recommendations, thrombosis and fibrinolysis markers are not in routine clinical use.
- Inconsistent laboratory methodology is a significant barrier to comparing results and clinical interpretation.
- Evidence supporting the accuracy of these markers exists but is hampered by methodological variability.
Conclusions:
- Thrombosis and fibrinolysis markers have potential for cardiovascular risk stratification.
- Standardization of laboratory methods is crucial for their effective clinical implementation.
- Further research and guideline updates are needed to facilitate routine use of these predictive markers.
Abstract:
Our recent understanding of acute coronary syndrome as an atherothrombotic process has led to research efforts in the development of markers of thrombosis and fibrinolysis for risk prediction in cardiovascular heart disease. Although American Heart Association/American College of Cardiology guidelines recommend fibrinogen as a category I risk factor and also suggest factor VII, plasminogen activator inhibitor-1, tissue-type plasminogen activator, and von Willebrand factor as other potentially clinically useful markers, these tests have not come into routine clinical use. Their development as predictors of risk may be hampered by inconsistent laboratory methodology, which causes difficulty in comparing result interpretation with published trial studies. This article presents the history of development for these tests, proper laboratory handling, the best trial data that present evidence of their accuracy, and current guidelines for clinical use.
Related Concept Videos
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Clot Retraction and Fibrinolysis
Venous Thrombosis III: Interprofessional Care
Extrinsic and Intrinsic Pathways of Hemostasis
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
Coagulation
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...

