[Comparative evaluation of 3 automated optical coagulation detection systems]

Area of Science:

• Clinical Chemistry
• Hematology
• Medical Technology

Background:

• Traditional photo-optical coagulation analyzers have limitations in throughput and automation.
• The development of advanced automated hemostasis testing systems is crucial for efficient laboratory diagnostics.

Purpose of the Study:

• To evaluate and compare the performance of three new automated coagulation analyzers: Organon Teknika-General Diagnostics Coag A Mate X2 (CAM X2), Ortho Koagulab 40A, and MLA Electra 700 (E 700).
• To assess their reliability, accuracy, and efficiency in routine coagulation testing.

Main Methods:

• Simultaneous evaluation of the three analyzers using the same protocol and samples.
• Assessment of Prothrombin Time (PT), Activated Partial Thromboplastin Time (APTT), fibrinogen determination, and specific factor assays.
• Statistical analysis of repeatability, linearity, and correlation with existing methods.

Main Results:

• All three analyzers demonstrated high throughput and reliable fibrinogen determination with excellent linearity.
• Excellent repeatability was observed for PT and prothrombin complex factor assays (CV: 1-2.5%).
• Good repeatability was noted for APTT (CV: 0.5-3%) with specific reagent limitations, and fibrinogen assays yielded good results (CV: 3-4% and 6-8%).
• High correlation (R > 0.96) was found with results from other devices.
• The MLA Electra 700 (E 700) showed limitations in speed for APTT, while the CAM X2 was the quickest instrument.

Conclusions:

• The evaluated automated coagulation analyzers offer significant advantages in throughput, automation, and result expression compared to older devices.
• These instruments provide reliable and accurate results for key coagulation parameters, suitable for both routine and emergency testing.
• The MLA Electra 700 (E 700) is well-suited for emergencies due to its loading system, while the CAM X2 excels in handling large sample volumes.