An evaluation of the effect of reagent modification on routine laboratory coagulation tests.

The research article explores how altering commercial reagents could impact the lab-based evaluation of specified haemostatic parameters in normal, non-pregnant mares. The regular coagulation screening assays examined are the activated partial thromboplastin time (APTT) and the one-stage prothrombin time (PT), along with specific tests to measure the activity of Factors VII, VIII:C, and IX.

Introduction to the Research

• This research article focuses on the potential impact of changing commercially available reagents on the accuracy and result of laboratory coagulation tests utilized for assessing haemostatic parameters in non-pregnant mares.

Key Assays Used

• The assays under study include routine coagulation screening assays like the activated partial thromboplastin time (APTT) and the one-stage prothrombin time (PT). The activated partial thromboplastin time (APTT) test measures how quick the blood clots, while the one-stage prothrombin time (PT) is another test that measures coagulation time but is primarily used to assess the effectiveness of the extrinsic pathway of blood clotting.
• Additionally, specific assays for identifying the biological activity of blood clotting factors were also used. Specifically, the functionality of Factor VII, a protein which helps in blood clotting, Factor VIII:C, acting as an essential blood-clotting protein, and Factor IX, another key protein in blood clotting were evaluated. Disruption in these factors often results in hemophilia or other related bleeding disorders.

Research Objective

• The central motive of the research was to understand the aftereffects of making modifications to the reagents used in these assays. This examination is critical because even a slight alteration or modification in reagents could potentially influence the outcomes of these laboratory tests significantly.
• The results of these tests play an essential role in diagnosing diseases that relate to blood clotting mechanisms. Hence, ensuring the reliability, accuracy, and reproducibility of these tests is crucial.