Real-time global coagulation assay via ordered porous layer interferometry using silica colloidal crystal film

Area of Science:

• Biomedical Engineering
• Clinical Diagnostics
• Materials Science

Background:

• Conventional coagulation diagnostics assess single factors, failing to capture overall hemostasis.
• A need exists for a global coagulation assay for diagnosing bleeding/clotting disorders and monitoring anticoagulant therapy.
• Ordered porous layer interferometry using silica colloidal crystal (SCC) films offers real-time, cost-effective detection.

Purpose of the Study:

• To develop and validate a global coagulation assay utilizing ordered porous layer interferometry with SCC films.
• To assess the assay's capability in analyzing coagulation dynamics under varying conditions.
• To evaluate the assay's performance with real blood samples and clinical utility.

Main Methods:

• Developed a global coagulation assay based on ordered porous layer interferometry with SCC films.
• Created a model coagulation system using fibrinogen and thrombin to study coagulation kinetics.
• Validated the assay using real blood samples, varying calcium chloride concentrations, and different biochemical conditions to simulate hyper- and hypocoagulable states.

Main Results:

• The assay successfully analyzed the impact of thrombin activity and fibrinogen concentration on coagulation.
• Demonstrated excellent detection of calcium chloride concentrations, a key coagulation trigger.
• Significantly distinguished between hypercoagulable and hypocoagulable blood samples and showed satisfactory clinical correlation with standard assays.

Conclusions:

• The developed global coagulation assay is simple, rapid, and real-time, requiring minimal reagents.
• It allows for the recording of the entire coagulation process and extraction of multiple indicators in a single test.
• This novel, low-cost assay holds significant potential for advancing clinical coagulation testing.