Coagulation Profile (PT/INR & aPTT)

Clotting or coagulation factors are the proteins found in the blood that help stop bleeding when there is a wound or cut. A Coagulation Profile (PT/INR & aPTT) is used to assess the clotting function of the blood and determine if there is a problem with any of your clotting factors. Your doctor may suggest this test if you have symptoms of bleeding or clotting disorders, such as unexplained heavy bleeding, easy bruising, unusual heavy nose bleeds, leg swelling, redness on the legs, or chest pain. This test can also help check for clotting function before a scheduled surgery.

A Coagulation Profile (PT/INR & aPTT), including PT/INR and aPTT tests, is used to assess the risk of bleeding or clotting disorders, such as hemophilia, deep vein thrombosis, vitamin K deficiency, monitor anticoagulant therapy, and evaluate liver function. A PT/INR test helps measure how long it takes for blood to clot. The International Normalized Ratio (INR) is a standardized method used to interpret test results consistently. This test is used primarily to monitor the effectiveness of anticoagulant medications, such as warfarin, and assess liver function. The aPTT test especially helps evaluate the effectiveness of anticoagulant medications, such as heparin.

Usually, overnight fasting (8-12 hours) is preferred before a Coagulation Profile (PT/INR & aPTT), and a duly filled coagulation requisition form is mandatory for sample collection. If you take anticoagulant medication, giving the testing sample before the daily dose is taken is advised. Also, inform the doctor if you are taking medications such as blood thinners, as they may interfere with test results, and your doctor may adjust your dose or stop them temporarily before the test.

Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Talk to your doctor about your specific test results. Narrate your complete medical and family history to help the doctor correlate your clinical and laboratory findings. The test results will help them prevent, manage, and treat coagulation-related health issues.