A PT/INR test helps ensure the effectiveness of the anticoagulant drug warfarin (Coumadin®) and that prothrombin time and internationally normalized ratio is appropriately prolonged. PT-INR tests measure the blood’s ability to clot. Blood normally clots to slow down it’s flow in response to the damage of blood vessels, in order to prevent excessive bleeding. A clot formed inappropriately in the areas of heart, lung and brain, however, can hinder normal blood flow and may result in life-threatening events such as stroke and heart attack. For patients who lose their ability to properly reabsorb clots and patients who have low tolerance to clots, anticoagulation medicine (blood thinner) is prescribed. Because these medications may have narrow therapeutic windows and be sensitive to diet and lifestyle, it may be necessary for patients to adjust their dosage regularly. In order to make good decisions regarding the need for such an adjustment, it is important for the patient to know the clotting status of their blood. PT or INR value from the PT-INR tests helps patients or healthcare professionals make these decisions. A quick and accurate measurement of PT or INR value is critical for the safety and effectiveness of the anticoagulation therapy. The clotting capacity of the blood is reported as a Prothrombin Time (PT) or an International Normalized Ratio (INR) value. qLabs® PT-INR Test Strips While PT times may vary depending on the test method used, INR values should be the same regardless of the method used. International Normalized Ratio (INR) is recommended by WHO to remove dependence on reagent and test method. The qLabs® ElectroMeter calculates the PT value based on an analysis of the test data, and then converts this to the correct INR value.
The qLabs PT/INR test is an easy-to-use finger-stick blood test, designed for professional or home use, that provides highly accurate results within 2 minutes. The dry reagent strips can be stored at room temperature for immediate use for up to 18 months, with no equilibration required.
The APTT test is used primarily to investigate unexplained clotting or bleeding. The qLabs APTT test is an easy-to-use finger-stick blood test, designed for professional use, that provides highly accurate results within 7 minutes. The dry reagent strips can be stored at room temperature for immediate use for up to 18 months, with no equilibration required. The APTT is a general coagulation test used for screening and measuring the functionality of the intrinsic coagulation pathway, which involves the coagulation factor XII, XI, IX, VIII, X, V, II and fibrinogen. It is also used to monitor the effectiveness of heparin therapy. The APTT is a modification of the Partial Thromboplastin Time (PTT); it can provide a more precise and sensitive assay. qLabs® APTT Test Strips The qLabs® APTT test strip measures the blood’s ability to clot which determines the Activated Partial Thromboplastin Time (APTT) on whole blood.
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