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Information developed by A. Please discuss with your doctor any questions or concerns you may have. Medical Tests. How to Prepare for the Test Certain medicines may affect the results of the test.
How the Test will Feel When the needle is inserted to draw blood, some people feel moderate pain. Deficiency may also occur if too much of the protein is being used up. You can also inherit antithrombin deficiencies through genetic mutations in the antithrombin gene. Like all blood tests, the antithrombin III test involves some risks. These risks are common to all routine blood tests. They include:. Certain medications can interfere with the results of an antithrombin III test, including blood thinners such as ibuprofen and warfarin.
You may need to stop taking those medications before your test. Ask them if you should stop taking any of them in the days or hours leading up to your test.
A healthcare provider will likely draw a blood sample from one of your arms, using a small needle. Once the lab reports the results of your test, your doctor can help you understand what they mean. If your antithrombin level is lower than normal, you likely have an antithrombin deficiency.
This puts you at an increased risk of developing DVT and other conditions, including:. Your doctor may recommend additional testing to determine the cause of your antithrombin deficiency. Possible causes include:. Alternately, your test results may indicate normal or higher-than-normal levels of antithrombin.
Low levels of clotting factors lead to excessive blood loss. An imbalance in the proteins and cells responsible for blood and its clotting can cause thick blood. How this condition is diagnosed, and are there….
This can put you at…. This side effect can occur across all age groups and…. Deep vein thrombosis DVT is a serious condition that occurs when a blood clot forms in a vein located deep inside your body. Editorial team. Congenital antithrombin III deficiency. Exams and Tests. A physical exam may show: A swollen leg or arm Decreased breath sounds in the lungs A rapid heart rate The health care provider can also order a blood test to check if you have a low level of antithrombin III.
More information and support for people with congenital antithrombin III deficiency and their families can be found at: National Organization for Rare Disorders -- rarediseases. Outlook Prognosis. Most people have a good outcome if they stay on anticoagulant medicines. Possible Complications.
Blood clots can cause death. Blood clots in the lungs are very dangerous. When to Contact a Medical Professional. See your provider if you have symptoms of this condition. Alternative Names. Venous blood clot. Blood Clots Read more. Health Topics A-Z Read more.
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