Rapid determination of five coagulation parameters in one sample with a centrifugal analyzer

Area of Science:

• Clinical Chemistry
• Hematology
• Coagulation Diagnostics

Background:

• Routine laboratory batch analyzers are essential for high-throughput diagnostic testing.
• Chromogenic substrate assays offer a sensitive method for measuring coagulation factors.
• Adaptation of these assays to automated platforms is crucial for efficiency.

Purpose of the Study:

• To adapt spectrophotometric clotting assays with chromogenic substrates for routine laboratory batch analyzers.
• To establish optimal assay conditions and evaluate assay performance.
• To compare the automated chromogenic assay with traditional manual clotting assays.

Main Methods:

• Adaptation of chromogenic substrate assays for a batch analyzer.
• Determination of optimal assay conditions and plasma dilutions.
• Evaluation of within- and between-assay variation, and intraindividual variation.
• Comparison of automated chromogenic assays with manual clotting assays.

Main Results:

• A single plasma dilution was found suitable for multiple coagulation parameters, simplifying the assay protocol.
• Optimal assay conditions were determined for the automated method.
• The automated chromogenic assay demonstrated acceptable within- and between-assay variability.
• No significant difference was observed between the automated chromogenic assay and manual clotting assays (p < 0.01).

Conclusions:

• Spectrophotometric clotting assays using chromogenic substrates can be reliably adapted for automated batch analyzers.
• The automated method provides consistent and comparable results to manual assays.
• This adaptation enhances efficiency and standardization in routine coagulation testing.