Anti Thrombin III Activity Functional, Citrated Plasma
Anti Thrombin III Activity Functional Test
Anti Thrombin III Activity Functional, Citrated Plasma is a specialized blood test used to measure the functional activity of Antithrombin III (AT III), a natural anticoagulant protein that helps regulate blood clotting in the body. This test is important for identifying clotting disorders and evaluating the risk of abnormal blood clot formation.
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Detailed Description
Antithrombin III is a protein produced by the liver that helps prevent excessive blood clotting by inhibiting certain clotting factors, especially thrombin and Factor Xa. Reduced functional activity of Antithrombin III may increase the risk of developing deep vein thrombosis (DVT), pulmonary embolism, or recurrent blood clots.
This test evaluates whether the Antithrombin III protein is functioning properly in the bloodstream. It is commonly advised for patients with unexplained clotting episodes, recurrent miscarriages, family history of thrombophilia, or suspected inherited clotting disorders.
Why This Test is Done
✔ Detect Antithrombin III deficiency
✔ Evaluate recurrent blood clot formation
✔ Diagnose inherited or acquired thrombophilia
✔ Assess unexplained deep vein thrombosis (DVT)
✔ Investigate recurrent pregnancy loss
✔ Monitor coagulation disorders
Symptoms & Conditions That May Require This Test
- Recurrent blood clots
- Swelling or pain in legs
- Pulmonary embolism symptoms
- Family history of clotting disorders
- Repeated miscarriages
- Stroke at a young age
- Unexplained thrombosis
Specimen Required
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Sample Type: Citrated Plasma
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Preparation: Fasting may be recommended based on clinical advice
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Processing Time: As per laboratory standards
Test Principle
The Anti Thrombin III functional assay measures the anticoagulant activity of Antithrombin III in plasma. Reduced activity may indicate inherited deficiency, liver disease, nephrotic syndrome, disseminated intravascular coagulation (DIC), or ongoing clotting disorders.
Factors That May Affect Results
- Anticoagulant medications
- Liver disease
- Heparin therapy
- Acute thrombosis
- Pregnancy
- Nephrotic syndrome
Usage Instructions
- Follow your doctor’s instructions before sample collection
- Inform the laboratory about any blood thinner medications
- Avoid delaying sample transport for accurate results
Additional Information
- Also Known As: AT III Functional Assay / Antithrombin Activity Test
- Recommended For: Individuals with suspected clotting disorders
- Report Type: Functional activity measurement
What You Receive
✔ Accurate laboratory testing
✔ Reliable diagnostic reporting
✔ Professional sample handling
✔ Quality-assured processing
Safety & Care
- Test results should be interpreted by a qualified healthcare professional
- Do not self-diagnose based on laboratory reports alone
- Clinical correlation is essential for accurate diagnosis
Free From
✔ Non-invasive procedure beyond blood collection
✔ No radiation exposure
✔ Safe laboratory testing process
FAQs
Q1. What is the purpose of the Anti Thrombin III Activity Functional test?
It helps detect abnormalities in blood clot prevention mechanisms and evaluates clotting risk.
Q2. Is fasting required for this test?
Fasting may or may not be required depending on the doctor’s advice.
Q3. What happens if Antithrombin III levels are low?
Low activity may increase the risk of abnormal blood clot formation.
Q4. Can medications affect the test results?
Yes, blood thinners and anticoagulants can influence the results.
Q5. Who should undergo this test?
Individuals with recurrent clots, thrombosis history, or inherited clotting disorder suspicion.
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