App Store
Google Play
View your reports and upcoming health checkups at one place.
Upload Prescription
Not sure which tests to take? Share your prescription with us and our team will call you.
Mumbai
Pune
Chennai
Bengaluru
Delhi
Surat
No city found
Can't find a city for Home Collection? Click Here to find the Nearest Metropolis Center.
Activated Partial Thromboplastin Time (APTT) Test
Also Known As : Activated Partial Thromboplastin Time, PTT (Partial Thromboplastin Time)
MORE WAYS TO BOOK
Brief Details
What is an APTT Test?
An Activated Partial Thromboplastin Time (APTT) test is a blood test that measures how long it takes for your blood to form a clot. The APTT test helps doctors detect bleeding disorders, monitor blood-thinning medications, and assess your blood's clotting ability before surgery. This test uses a blood sample drawn from a vein in your arm.
What does the APTT Test measure?
The APTT blood test evaluates several important aspects of your blood's clotting function:
- Measures the time it takes for blood to clot after specific substances are added
- Assesses the function of clotting factors in the intrinsic and common pathways
- Evaluates factors I (fibrinogen), II (prothrombin), V, VIII, IX, X, XI, and XII
- Monitors the effectiveness of heparin therapy in patients taking blood thinners
- Detects the presence of clotting inhibitors or antibodies that interfere with normal clotting
APTT Test: Who Needs It and Why It's Done
What Symptoms May Call for an APTT Test?
Your doctor may recommend an APTT test if you experience symptoms that suggest a bleeding disorder:
- Unexplained or frequent bruising
- Prolonged or frequent nosebleeds
- Bleeding gums
- Heavy or prolonged menstrual periods
- Blood in urine or stool
- Excessive bleeding after minor cuts, dental work, or surgery
- Painful or swollen joints due to internal bleeding
Who should get an APTT Test?
Several groups of people may need an APTT test for different health conditions:
- Patients experiencing unexplained bleeding symptoms
- Individuals receiving heparin therapy who need regular monitoring
- People scheduled for surgery as part of pre-operative screening
- Those with a family history of bleeding disorders like haemophilia
- Patients being evaluated for autoimmune diseases or liver conditions
- People with suspected clotting factor deficiencies
Why is an APTT Test done?
An APTT test is performed to investigate the cause of abnormal bleeding, assess your blood's clotting ability before surgical procedures, and monitor the safety and effectiveness of blood-thinning medications.
Importance of an APTT Test
The APTT test plays a crucial role in diagnosing and managing bleeding disorders. It provides doctors with essential information about your blood's clotting function, helping them identify conditions like haemophilia, von Willebrand disease, or liver problems that affect clotting factors. For patients on heparin therapy, regular APTT monitoring ensures the medication dosage is effective without causing dangerous bleeding. The test also helps assess bleeding risks before surgery, allowing medical teams to take necessary precautions to ensure your safety during procedures.
APTT Test Booking & Reports – Metropolis Healthcare India
How to Book an APTT Test?
- Simple Online Booking
Booking can be done through the Metropolis Healthcare App or website. Select APTT Test, choose a convenient time slot, and provide your address for a blood test at home. You can also visit the nearest Metropolis Lab if you prefer to give the sample directly at the lab. - Safe Home Sample Collection
Our trained phlebotomists ensure timely collection of your sample while strictly following all safety and hygiene protocols. - Sample Tracking Updates
Stay informed at every step. From collection to testing, you can track your sample directly through the Metropolis Healthcare website. - Accurate Laboratory Testing
Your sample is processed at our NABL & CAP accredited laboratories, where expert technicians ensure accurate results. - Quick & Easy Reports
Receive your test reports promptly via email, WhatsApp, or by downloading them directly from the Metropolis Healthcare website or app.
Is home sample collection for APTT Test available near you?
Yes, home blood sample collection is available for APTT testing. Our trained phlebotomists visit your home at your preferred time, following strict safety protocols to collect your blood sample. With Metropolis Healthcare's extensive network of over 10,000 touchpoints across India, professional home collection services are available in most cities, providing you with accurate, reliable results from accredited laboratories.
How Long Does It Take to Get an APTT Test Report?
Reports are usually available after 4 hours once the sample reaches the lab.
Note: Reporting time and cost may vary depending on your location.
Where can I see or get APTT Test results?
Test results from Metropolis Healthcare can be accessed through multiple convenient channels. You can log in to the Metropolis website using your credentials or use the Metropolis Healthcare App to view and download your reports. Additionally, test reports are sent via email or WhatsApp and you also have the option to collect a physical copy directly from the lab.
Interpreting APTT Test Results
What Your APTT Test Results May Indicate
The following table helps you understand what your APTT test results mean:
|
Parameter |
Normal Range |
High Values May Indicate |
Low Values May Indicate |
|
APTT (Test) |
24.0-39.2 seconds |
Bleeding disorders, clotting factor deficiencies, liver disease, heparin therapy, lupus anticoagulant |
Elevated factor VIII levels, inflammation, infection, recent factor replacement therapy |
|
APTT-Control |
=29.7 seconds |
Possible contamination, or reagent issues; may also suggest sensitivity to anticoagulants |
May indicate overly active clotting reaction or technical errors in the assay |
Conditions that May Affect APTT Test Accuracy
Several factors can influence your APTT test results and should be discussed with your doctor:
- Heparin contamination from intravenous lines can prolong clotting times
- High haematocrit levels may affect test accuracy
- Clotted blood samples can give incorrect results
- Insufficient sample volume may lead to unreliable results
- Medications like warfarin, aspirin, and certain antihistamines can affect results
- Oestrogen therapy or oral contraceptives may shorten clotting times
- Drugs like diphenylhydantoin and naloxone can prolong clotting times
- Severe dehydration can alter blood concentration and affect results
How is an APTT Test Done?
The APTT test involves a straightforward blood collection procedure:
- A healthcare professional cleans the area on your arm with an antiseptic
- An elastic band is tied around your upper arm to make veins more visible
- A sterile needle is inserted into a vein to collect blood into a special tube
- The tube contains sodium citrate to prevent the blood from clotting immediately
- The blood sample is sent to the laboratory for analysis
- Laboratory technicians add activating agents to measure clotting time
How Should You Prepare for an APTT Test?
Preparing for an APTT test is simple and requires minimal effort:
- No fasting required; you can eat and drink normally before the test
- Inform your doctor about all medications, vitamins, and herbal supplements you're taking
- Mention any bleeding history or family history of bleeding disorders
- Stay well-hydrated by drinking adequate water before your test
- Provide clinical history or clinician contact details as requested
- Wear comfortable clothing with sleeves that can be easily rolled up
Diseases that an APTT Test Can Help Detect
The APTT test can help diagnose various health risks and conditions affecting blood clotting:
- Haemophilia A and B (factor VIII and IX deficiencies)
- Von Willebrand disease
- Liver disease affecting clotting factor production
- Lupus anticoagulant syndrome
- Disseminated intravascular coagulation (DIC)
- Inherited or acquired clotting factor deficiencies
- Fibrinolysis disorders
- Vitamin K deficiency
- Leukaemia affecting clotting function
APTT Test/Packages that You Can Book With Metropolis Healthcare
Here are related coagulation tests available to provide comprehensive assessment of your blood clotting function:
|
Test/Package Name |
Purpose/Highlights |
|
Evaluates intrinsic and common clotting pathways |
|
|
Basic assessment of blood coagulation ability |
|
|
Specific clotting time measurement using kaolin activator |
|
|
Detects antibodies that interfere with blood clotting |
Frequently asked questions
Find quick answers to the most common questions about health tests, bookings, and reports.
There is no specific best time of day for an APTT test. You can take the test at any time as recommended by your doctor, since the timing does not affect the results.
No, fasting is not required for an APTT test. You can eat and drink normally before the test unless your doctor has other specific instructions for additional tests.
Yes, severe dehydration can potentially affect APTT results by concentrating your blood, which may alter coagulation parameters. It's best to stay adequately hydrated before your blood test.
No special dietary preparation is needed. However, inform your doctor about all medications, vitamins, and herbal supplements you're taking, as many can affect clotting test results.
Why Metropolis Healthcare?
Metropolis has been present for over 43 years in the market.
Metropolis has a team of 200 senior pathologists and over 2000 technicians delivering diagnostic solutions in the areas of routine, semi specialty and super specialty domains like Oncology, Neurology, Gynaecology, Nephrology and many more.
NABL & CAP
Accredited labs
210+
Advanced Labs
750+ Cities
Global Presence
2,000+
Scientific Officers
4,100+
Test & Profiles
Latest Blogs & News
Stay informed with our expert insights and updates.
About Us
Metropolis Healthcare is a leading diagnostic service provider in India. We are a team of dedicated professionals committed to ensuring you and your family receive the most accurate and timely healthcare solutions. We believe in making health care accessible, affordable and evidence-based. Our expert panel are equipped with the latest technology and manned by a certified team of over 4000+ technicians.
In diagnostic services, we have more than three decades of experience servicing diverse stakeholders health advantage packages for men, women and seniors, genetic fitness & corporation in over 650+ tests like Oncology, Neurology, Gynaecology, Haematology, and many more. Our diagnostic services are located in leading doctors and clinics and serve over 15+ cities in India.
View your reports and upcoming health checkups at one place.
Upload Prescription
Not sure which tests to take? Share your prescription with us and our team will call you.