Antithrombin III in Bhubaneswar
Also called: AT test, AT3, Antithrombin III test
Report
{context.blood_test.parameters} Parameters
The test at a glance
What it checks
Report delivery
Test for
Age group
Commonly advised for
What is a Antithrombin III ?
Know More About This Test
The Anti-Thrombin III test measures the level of antithrombin, a natural protein that helps regulate blood clotting by preventing excessive clot formation. Deficiency of antithrombin increases the risk of abnormal blood clots in veins and arteries.
This test is crucial in evaluating inherited or acquired clotting disorders, especially in patients with unexplained or recurrent thrombosis.
Why Is This Test Recommended?
You may be advised this test to:
Evaluate recurrent or unexplained blood clots
Investigate thrombosis occurring at a young age
Assess pregnancy-related clotting complications
Screen for inherited clotting disorders
Evaluate family history of thrombosis
Understanding Antithrombin Testing
Antithrombin is a natural anticoagulant protein produced by the liver. It works by inactivating several clotting factors, preventing excessive clot formation. When antithrombin levels are low, the balance shifts toward clot formation, significantly increasing thrombosis risk. This test helps identify both inherited deficiencies (present from birth) and acquired deficiencies (developing due to other conditions).
Symptoms or Conditions That May Require This Test
Recurrent deep vein thrombosis (DVT)
Pulmonary embolism
Blood clots at unusual sites
Thrombosis at a young age (under 50)
Pregnancy-related clotting events
Family history of clotting disorders
Unexplained clot formation
Why Do I Need This Test?
Early detection of antithrombin deficiency helps prevent life-threatening clot formation and allows timely initiation of anticoagulant therapy. It also helps guide treatment decisions and family screening.
How Do I Prepare for the Test?
Inform your doctor about all medications, especially anticoagulants
Testing is ideally done when not on blood thinners, as they can affect results
No fasting is typically required
Discuss timing with your doctor if you're pregnant or recently had surgery
How Is the Test Performed?
A blood sample is drawn from a vein in your arm and sent to the laboratory for analysis using specialized immunoassay or functional activity testing methods.
What Happens After the Test?
Results are typically available within a few days. If levels are low, your doctor may recommend repeat testing to confirm the diagnosis and rule out temporary causes.
When Should I Consult a Doctor?
Immediately if you experience symptoms of blood clots such as leg pain and swelling, chest pain, shortness of breath, or if your test results show low antithrombin levels.
Risks Associated With This Test
Minimal risk related to blood draw only, including slight bruising or discomfort at the puncture site.
Lifestyle Tips
Stay active and avoid prolonged immobility
Maintain adequate hydration
Follow prescribed anticoagulant therapy if recommended
Inform healthcare providers about your condition before surgery
Wear compression stockings during long travel if advised
Avoid smoking, which increases clot risk
What Does This Test Measure?
The test measures the concentration and functional activity of antithrombin III, a key anticoagulant protein that regulates blood clot formation.
What Do the Results Mean?
Normal levels (80–120%): Antithrombin deficiency unlikely
Low levels (<80%): Increased risk of abnormal blood clots; may indicate inherited or acquired deficiency
Borderline levels: May require repeat testing for confirmation
What Should I Do If Results Are Abnormal?
Seek specialist care (hematologist) for further evaluation, confirmatory testing, family screening, and discussion of long-term anticoagulation therapy if needed.
Factors Affecting Results
Current use of anticoagulants (heparin, warfarin)
Acute thrombosis or recent clot formation
Liver disease
Pregnancy
Recent surgery or trauma
Certain medications
Timing of sample collection
FAQs
Is antithrombin deficiency common?
No, antithrombin deficiency is rare, occurring in approximately 1 in 2,000 to 5,000 people, though it accounts for a significant proportion of inherited clotting disorders in younger patients with unexplained thrombosis.Is it inherited?
Yes, antithrombin deficiency is often inherited in an autosomal dominant pattern, meaning a child has a 50% chance of inheriting the condition if one parent carries the deficiency; however, acquired deficiency can also occur.Can pregnancy affect levels?
Yes, pregnancy can lower antithrombin levels temporarily due to increased consumption, hemodilution, and hormonal changes, which increases clotting risk; testing may need careful interpretation during pregnancy and postpartum periods.Is treatment lifelong?
Sometimes, treatment duration depends on whether the deficiency is inherited or acquired, and whether clots have occurred; those with inherited deficiency and recurrent clots typically require lifelong anticoagulation therapy.Is repeat testing required?
Yes, repeat testing is usually required to confirm the diagnosis, especially if initial levels are borderline or if testing was done during acute illness, anticoagulant use, or pregnancy when results may be temporarily affected.
Who should take this test
Antithrombin III is a natural protein that stops your blood from clotting too much. This test is advised if:
- You have had a clot in the leg or lung, especially at a young age
- Clotting problems run in your family
- Blood thinners are not working as expected
- Your doctor is investigating repeated clots
Antithrombin III testing in Bhubaneswar
Tapadia Diagnostic Centre in Bhubaneswar offers NABL-accredited Antithrombin III test from a Blood sample(s). AT test, AT3, Antithrombin III test is also prescribed for Chest pain, leg swelling, breathing trouble. Established in 1989, this doctor-led diagnostic centre ensures high accuracy. Home sample collection and walk-in facility available at our Bhubaneswar center. Pay at the centre with no advance payment. Book online or visit us.
Frequently asked questions
Related Pathology Tests in Bhubaneswar
Centers You Can Choose To Visit
Antithrombin III in Bhubaneswar
Rated 4.6 on Google
From 6,477 patient reviews across our Hyderabad centres.
Every report, kept for you
Past reports stay in your account and can be downloaded again.
NABL accredited
Every result reviewed by a qualified pathologist before it reaches you.
Four decades of practice
A family-run diagnostic centre, trusted by doctors and households since 1989
Medically Reviewed by Qualified Biochemists
Antithrombin III in Other Cities
Antithrombin III in Vijayawada
Antithrombin III in Visakhapatnam
Antithrombin III in Ahmedabad
Antithrombin III in Bengaluru
Antithrombin III in Mumbai
Antithrombin III in Secunderabad
Antithrombin III in Karimnagar
Antithrombin III in Hyderabad
Antithrombin III in Warangal
Antithrombin III in Chhatrapati Sambhajinagar (Aurangabad)
Master Health Checkup (Blood) in Bhubaneswar
HIV 1 & 2 Antibodies, Serum-Elisa Method in Bhubaneswar
Dengue IgG, IgM Antibodies + NS1 Antigen-Rapid, Serum in Bhubaneswar
Lipoprotein A (Lp A), Serum in Bhubaneswar
Erythrocyte Sedimentation Rate (ESR) in Bhubaneswar
Thyroxine Total (T4), Serum in Bhubaneswar
Triiodothyronine Total (T3), Serum in Bhubaneswar
CA 19.9 (Pancreatic Cancer Marker), Serum in Bhubaneswar
NIPT with Microdeletions in Bhubaneswar
NIPT Basic in Bhubaneswar
Complete Blood Picture (CBP) in Bhubaneswar
Serum Phosphorus Test in Bhubaneswar
TIBC in Bhubaneswar
Urology Profile in Bhubaneswar
Beta HCG Free, Serum (Pregnancy Test) in Bhubaneswar
Viral Screening in Bhubaneswar
AFP Test in Bhubaneswar
Microalbuminuria test in Bhubaneswar
Diabetes Testing (FBS + PLBS) in Bhubaneswar
Antithrombin III in Bhubaneswar
D-dimer test in Bhubaneswar
Creatine Kinase (CK) Test in Bhubaneswar
AST Test in Bhubaneswar
Cardiac Markers in Bhubaneswar
Pap Smear - LBC in Bhubaneswar
DVT Profile in Bhubaneswar
Bleeding Time and Clotting Time (BT & CT) in Bhubaneswar
Estradiol Test in Bhubaneswar
hs-CRP Test in Bhubaneswar
Alkaline Phosphatase (ALP) Test in Bhubaneswar
Fertility Profile in Bhubaneswar
Albumin blood test in Bhubaneswar
Troponin T in Bhubaneswar
Infertility Profile Extended in Bhubaneswar
Electrolyte Panel in Bhubaneswar
Anticardiolipin Antibodies (IgG) in Bhubaneswar
PSA Test in Bhubaneswar
FSH Test in Bhubaneswar
STD Panel in Bhubaneswar
PCOS Profile in Bhubaneswar
Serum Iron Test in Bhubaneswar
Cardiac Profile-III in Bhubaneswar
Plasma Fibrinogen Test in Bhubaneswar
HBsAg Test in Bhubaneswar
Cardiac Biomarker Test in Bhubaneswar
Herpes Simplex Virus (HSV) Types 1 and 2 Antibody Test in Bhubaneswar
Antenatal Profile in Bhubaneswar
Activated Partial Thromboplastin Time in Bhubaneswar
Lipid Panel in Bhubaneswar
Fine Needle Aspiration Cytology in Bhubaneswar
CRP test in Bhubaneswar
Joint Pain / SLE / Collagen Profile-I in Bhubaneswar
PAPP-A Test in Bhubaneswar
Insulin Test in Bhubaneswar
Triple Screen Test in Bhubaneswar
Anti-HCV Test in Bhubaneswar
Basic Metabolic Panel (BMP) in Bhubaneswar
Very low-density lipoprotein (VLDL) test in Bhubaneswar
Free Testosterone in Bhubaneswar
Triglycerides Test in Bhubaneswar
Quad Screen in Bhubaneswar
Folic Acid in Bhubaneswar
Urinalysis in Bhubaneswar
CEA Test in Bhubaneswar
Ferritin Test in Bhubaneswar
Transferrin Saturation% in Bhubaneswar
Protein C Antigen in Bhubaneswar
Alpha Feto Protein (AFP) - Fluid in Bhubaneswar
CPK (MB) Test in Bhubaneswar
Lupus Anticoagulant Testing in Bhubaneswar
Reticulocyte Count in Bhubaneswar
Infertility Profile-Basic in Bhubaneswar
Beta hCG Test in Bhubaneswar
DIABETIC PROFILE in Bhubaneswar
LH Test in Bhubaneswar
Anti-Müllerian Hormone (AMH) Test in Bhubaneswar
Bile Salts and Bile Pigments, Urine in Bhubaneswar
HbA1c in Bhubaneswar
Vitamin D (1,25-Dihydroxyvitamin D) in Bhubaneswar
Liver Function Test (LFT) in Bhubaneswar
Anemia Profile Basic in Bhubaneswar
Rheumatoid Factor in Bhubaneswar
Widal Test in Bhubaneswar
Bilirubin blood test in Bhubaneswar
Inhibin A, Tumor Marker, Serum in Bhubaneswar
Thyroid Function Tests in Bhubaneswar
eGFR in Bhubaneswar
Menopause Profile in Bhubaneswar
EXTENDED DIABETIC PROFILE in Bhubaneswar
LDH Test in Bhubaneswar
Total Cholesterol Test in Bhubaneswar
Random Blood Sugar Test in Bhubaneswar
Total Protein Test in Bhubaneswar
RPR test in Bhubaneswar
Anti-dsDNA Test in Bhubaneswar
HDL Cholesterol in Bhubaneswar
Blood Type Test in Bhubaneswar
ASO Titre in Bhubaneswar
Blood Urea(Serum) Test in Bhubaneswar
Postprandial Blood Sugar Test in Bhubaneswar
Back Pain Profile in Bhubaneswar
ANA test in Bhubaneswar
Serum Creatinine Test in Bhubaneswar
PT/INR Test in Bhubaneswar
Fasting Blood Sugar Test in Bhubaneswar
Extended Anemia Profile III Executive in Bhubaneswar
Kidney Function Test (Renal Profile) in Bhubaneswar
Serum Magnesium Test in Bhubaneswar
Well-woman exam in Bhubaneswar
LDL cholesterol test in Bhubaneswar
Prolactin Test in Bhubaneswar
Malaria Blood Smear in Bhubaneswar
Liver Function Test (+GGT) in Bhubaneswar
TPHA Test in Bhubaneswar
Hepatitis B Surface Antigen (HBsAg) Test in Bhubaneswar
Antenatal Profile 2 in Bhubaneswar
TSH Test in Bhubaneswar
Cardiac Catheterization in Bhubaneswar
Cardiolipin Antibody (IgM) in Bhubaneswar
Master Health Checkup (BL+RADIO) in Bhubaneswar
Calcium Profile in Bhubaneswar
Coagulation Profile in Bhubaneswar
Uric Acid Test in Bhubaneswar
Vitamin D (25 - Hydroxy Vitamin D, Serum) in Bhubaneswar
Globulin Test in Bhubaneswar
Fever Profile Test in Bhubaneswar
Connective Tissue Disease Profile in Bhubaneswar
Calcium Blood Test in Bhubaneswar
IHC in Bhubaneswar
Estriol Unconjugated (E3) Test in Bhubaneswar
Blood Typing in Bhubaneswar
Vitamin B12 Test in Bhubaneswar
Serum Cortisol in Bhubaneswar
Double Marker Test in Bhubaneswar
Pap Smear, Conventional in Bhubaneswar
Protein S Activity in Bhubaneswar
Non-Invasive Prenatal Testing (NIPT) in Bhubaneswar
whole exome sequencing in Bhubaneswar
Newborn Screening (NBS) in Bhubaneswar
Apolipoprotein A1 (Apo A1), Serum in Bhubaneswar
Apolipoprotein B (Apo B), Serum in Bhubaneswar
Renal Function Test (RFT) in Bhubaneswar
