A fully automated method for clot based coagulation panels using an MCA Multistat Centrifugal Analyzer

Area of Science:

• Clinical Biochemistry
• Hematology
• Laboratory Medicine

Background:

• Traditional coagulation assays can be time-consuming and require separate runs for different tests.
• The need for flexible and efficient analytical platforms in clinical laboratories is paramount for timely diagnosis.

Purpose of the Study:

• To adapt a commercially available analyzer for simultaneous analysis of multiple clot-based coagulation assays.
• To evaluate the performance and clinical utility of a modified turbidimetric method for prothrombin time (PT), activated partial thromboplastin time (APTT), and thrombin time (TT).

Main Methods:

• Software modifications were implemented on the I.L. Multistat Centrifugal Analyzer (MCA).
• Simultaneous turbidimetric measurement of PT, APTT, and TT was performed within a single analytical run.
• Results were compared with a standard Fibrometer method across various patient specimens, including those with coagulation disorders.

Main Results:

• The modified MCA system demonstrated excellent correlation with the Fibrometer for PT and TT assays in normal and abnormal specimens.
• The turbidimetric APTT assay showed increased sensitivity, detecting longer clotting times in the presence of heparin, fibrinogen split products, and mild factor deficiencies.
• The turbidimetric method proved suitable for identifying specific factor deficiencies and coagulation inhibitors.

Conclusions:

• Modified MCA software enables efficient, simultaneous analysis of PT, APTT, and TT using a turbidimetric approach.
• The enhanced sensitivity of the turbidimetric APTT assay provides valuable diagnostic information for specific coagulation abnormalities.
• This adaptable platform supports concurrent testing of various turbidimetric assays, enhancing laboratory workflow flexibility.