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    What Is an Activated Partial Thromboplastin Time (aPTT) Test?

    The Activated Partial Thromboplastin Time (aPTT) test is a blood test that measures the clotting time of blood. It examines a specific set of clotting factors to determine their levels and effectiveness.

    When you get a cut or injury, your body relies on clotting factors—special proteins—to stop the bleeding. The aPTT test can help identify the causes of unexplained bleeding or clotting difficulties. If your blood coagulates too slowly, you may have a bleeding disorder, such as haemophilia, which can result in serious blood loss. Conversely, if your blood clots too quickly, it can create blockages that hinder blood flow, potentially leading to severe issues like heart attacks or strokes. Additionally, the test is used to monitor certain medications, like heparin, which acts as a blood thinner. The aPTT test is often carried out alongside other assessments that look at clotting factors and their collective performance.

    In summary, the aPTT test provides doctors with crucial information about your blood's clotting ability, which is vital for managing bleeding and detecting abnormal conditions.

    Activated Partial Thromboplastin Time (aPTT) Test - Parameters

    The aPTT test primarily evaluates the time required for your blood to clot, focusing on certain clotting factors found in the blood. It assesses factors like VIII, IX, XI, and XII, in addition to fibrinogen.

    The term "activated" refers to the addition of a special substance to your blood sample to initiate the clotting process.

    A higher-than-normal aPTT result may point to an issue with the clotting factors. To ascertain the cause, a mixing study may be performed, which involves mixing your blood with normal plasma. If the mixing corrects the prolonged aPTT time, it indicates a deficiency in one or more clotting factors. If it does not, it could suggest the presence of an inhibitor affecting the clotting process, needing further investigation.

    Activated Partial Thromboplastin Time (aPTT) Test - Preparation

    Please consider the following before you schedule an APTT test in Mumbai:

    • Prerequisites There is no need to fast before an APTT test.

    • Best Time to Get Tested You can schedule this test for any time of the day.

    • Who Should Get an APTT Test? This test is suitable for individuals with unexplained bleeding, clotting disorders, autoimmune issues, liver disease, recurrent miscarriages, or those on heparin therapy.

    • Cautions Before Taking an APTT Test Generally, no special preparation is needed for the APTT test, but it's wise to consult your doctor to ensure it’s suitable for you.

    Why Take the Activated Partial Thromboplastin Time (aPTT) Test?

    An aPTT test, which stands for Activated Partial Thromboplastin Time test, assesses how well your blood clots by measuring specific proteins known as clotting factors. This test is particularly helpful for individuals experiencing unexplained bruising or bleeding, as it can indicate whether there are issues with the production or functioning of these clotting factors. It can also help identify the reasons behind the formation of blood clots, which may be linked to autoimmune issues where the body attacks its own tissues.

    If you are taking anticoagulant medication, the aPTT test is important to confirm that the medication is effective and that you are receiving the correct dose. Furthermore, this test is often performed before surgery in certain patients to assess their risk of excessive bleeding during or after the procedure. For individuals with liver disease, it can reveal whether the liver is producing adequate amounts of clotting factors.

    Additionally, the aPTT test may be beneficial for those who have experienced multiple miscarriages or if there is suspicion of a bleeding or clotting disorder.

    FAQs on the Activated Partial Thromboplastin Time (aPTT) Test in Mumbai

    The aPTT test is priced at ₹ 550. This fee includes the quickest home sample collection within 60 minutes of confirmation, and results will be delivered in 6 hours.

    Yes, you can receive home sample collection for the aPTT test through Orange Health Labs in Mumbai. Your sample can be collected at home within 60 minutes of making a booking, depending on availability of slots.

    An aPTT test determines blood clotting time, which is useful for identifying clotting disorders, monitoring heparin therapy, assessing bleeding risks prior to surgery, and evaluating conditions including liver disease and autoimmune disorders.

    There is no requirement to fast for an aPTT test.

    To schedule an aPTT blood test or health checkup via our platform, please follow these steps:

    • Find the Test: Search for the Activated Partial Thromboplastin Time test in Mumbai and navigate to Orange Health’s page from the results.

    • Review and Verify: Choose the aPTT test, verify any prerequisites, enter your location, and complete the booking by selecting a convenient time for sample collection at home.

    • Sample Collection: An eMedic will come to your address to collect the sample at the scheduled time.

    • Laboratory Processing: The sample will be forwarded to our ICMR-approved and NABL-accredited lab for analysis.

    • Receive Results: Your aPTT test reports will be delivered via email or WhatsApp within 6 hours and can also be accessed through our app.

    Normal levels for the aPTT test usually range from 17.8 seconds to 39.8 seconds.

    After booking the aPTT test, Orange Health Labs will send an eMedic to your home to collect the sample within 60 minutes. The home collection typically takes just a few minutes, and you can look forward to receiving your reports online within 6 hours.

    The interval for the aPTT test varies according to your doctor’s assessment of your health and risk factors. Be sure to follow your doctor’s instructions on how frequently to get the test done.

    The aPTT test evaluates just one factor: how long it takes for blood to form a clot.

    The aPTT test in Mumbai is available through Orange Health, with the convenience of home delivery, so you don’t have to visit a physical laboratory. Localities in Mumbai include, but are not confined to, Colaba, Dadar, Parel, Byculla, Bandra, Andheri, Juhu, Ghatkopar, Powai, Chembur, Vashi, Belapur, Santacruz, Khar, Versova, Lokhandwala, Goregaon, Borivali, Kandivali, Mulund, Bhandup, Nariman Point, Marine Drive, Malabar Hill, Churchgate, Worli, and Kurla.

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    • We do not accept cash payments
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    References

    1. MedlinePlus. Partial Thromboplastin Time (PTT) Test: MedlinePlus Lab Test Information [Internet].  Available from:  https://medlineplus.gov/lab-tests/partial-thromboplastin-time-ptt-test/
    2. Blood Clotting Too Quickly or Too Slowly? [Internet].  Available from:  https://my.clevelandclinic.org/health/diagnostics/25101-partial-thromboplastin-time
    3. Activated partial thromboplastin time | Pathology Tests Explained [Internet].  Available from:  https://www.pathologytestsexplained.org.au/ptests-pro.php?q=Activated+partial+thromboplastin+time#what-is-being-tested
    4. Zaidi SRH, Rout P. Interpretation of Blood Clotting Studies and Values (PT, PTT, aPTT, INR, Anti-Factor Xa, D-Dimer) [Internet].  Available from:  https://www.ncbi.nlm.nih.gov/books/NBK604215/