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Book Activated Partial Thromboplastin Time (APTT) TEST Online

Last Updated on 20th January 2022

What is the APTT test used for?What is included in the APTT test?Procedure for APTT test How to prepare for the APTT test?Things to consider after the APTT test is complete How much does the APTT test cost?*How long does it take to get the results for the APTT test? What do abnormal APTT test results indicate?Is the APTT test a definitive test?

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What is the APTT test used for?

APTT test is used when patients have the following symptoms when they experience bleeding due to any injury and wound. APTT test is used when you have the below-mentioned condition:

Abnormal or excessive bleeding during menstruation.
Easy bruising.
Clotting Time and Bleeding Time are abnormal.
Recurrent petechial haemorrhages or pinkish-red spots (break opening of a blood vessel).
Thrombocytopenia (a condition where a patient has very less blood platelets).
Bleeding tendency.
Before undergoing any surgery.
Recurrent presence of blood in stool or urine.

Apart from these, there can be many reasons facilitating the APTT test.

What is included in the APTT test?

Based on the condition for taking the test, your doctor may advise you to take some additional tests with APTT. Some of the following tests that you may have to take with APTT to measure your blood clotting are:

Thrombin time, also called TT
Activated whole blood clotting time, also called ACT
Prothrombin time, also called PT

Procedure for APTT test

A lab technician will come to you to collect the blood sample when you book a blood test through the MFine app. He will collect the sample at the time you schedule. The blood sample is collected from a vein in your arm. The sample is then sent to our accredited labs of your choice (made during the booking) for further processing. Certain drugs can affect the accuracy of the test, so inform your doctor about the medications you take.

After taking a blood sample from a vein in the patient’s arm, it is mixed with an anti coagulating medicine in normal tests. However, in the case of APTT, usage of anti coagulating medicine will affect the results. Thus, the sample is mixed with medicines that prevent clot formation like sodium citrate.

The sample taken was taken to the respective lab for processing for the test. The time it takes for forming a clot is calculated in seconds to minutes. The time varies based on age, health condition, and the medicine they use. Usually, it exceeds the normal range in the people who are taking blood-thinning medicine.

Book an APTT test to check your blood clotting time!

How to prepare for the APTT test?

Inform the doctor about your medications before taking the test.

There are no special precautions needed for this test. A lab technician will come to your home to collect the blood sample when you book for a test through the MFine app. He will collect the sample at the time you schedule.

Both men and women of all age categories can get this test done.

Things to consider after the APTT test is complete

A lab technician will come to your home to collect the blood sample from a vein in your arm when you book for a test through the MFine app. He will collect the sample at the time you schedule for the test. The sample is sent to our accredited labs of your choice (made during the booking) for further processing. You can return to your work after giving the sample.

How much does the APTT test cost?*

The cost of the APTT test varies based on the lab partner you use, time of the day, location. The cost varies based on the availability of the test ingredients. The test might have to be repeatedly taken when the patient is under treatment.

The test cost varies between Rs.60 to Rs.3100

*Disclaimer: The value varies based on location, time, and your preferred lab partner.

How long does it take to get the results for the APTT test?

The sample is sent to our accredited labs of your choice (made during the booking) for further processing. You can expect to get the results for the APTT test within 24 to 48 hours after the sample is collected. However, in certain cases, depending on the location, medical advice and preferred lab partner, it may take longer.

What do abnormal APTT test results indicate?

Your test results depend on a number of factors like age, gender, a method used, equipment used, health history etc.
If your blood activated clotting time is 70-120 sec, it is generally considered normal.
If you take the medicine heparin, your blood clotting time will be around 150-600seconds.
If your test level shows a higher level than normal, it may indicate that you may be suffering from liver disease, haemophilia, von Willebrand’s disease. It may also be due to a bleeding disorder. If your number is lower than normal, that may be the reason for having several miscarriages in women.

Disclaimer: Please consult with your doctor for interpreting the test reports.

Is the APTT test a definitive test?

No. APTT is not a definitive test. You may have to take other tests to confirm the results. Please consult your doctor after getting your reports. He may ask you to order other tests or to repeat the test if needed.

How to read the APTT test report?

The test is used to measure how many seconds your blood takes to form a clot. However, the standard normal level may vary with different labs, so it is better to consult your doctor to understand the results.

The normal value in a PTT is 60 to 70 seconds. But, this is an activated PTT (aPTT) test that measures blood clotting after adding a substance to your blood to make it clot faster. A typical APTT blood clotting time is 30 to 40 seconds.

If you get the test because you’re taking heparin, you’d want your PTT results to be more like 120 to 140 seconds, and your aPTT to be 60 to 80 seconds.

If your number is higher than normal, it may indicate that you are suffering from a bleeding disorder due to liver disease, haemophilia or others. If your number is lower than normal, that may be the reason for having several miscarriages in women.

If you have questions about your results, talk to your health care provider.

Book an APTT test to check your blood clotting time!

APTT test at home – how does it work?

The APTT test is just like any other blood test. A lab technician visits your home when you book your tests through the MFine app. The lab technician first cleans the arm and then inserts a syringe into a vein. The required amount of blood is then taken into a vial. The lab technician then removes the needle and places cotton wool or a bandage over the prick.

Are there any risks involved with the APTT test?

There is very little risk to having a blood test. You may have slight pain or bruise at the spot where the needle was put in, but most symptoms go away quickly.

What can affect the results of the APTT test?

Some anti-blood-clotting medications may affect the results of this test. That includes heparin and large doses of warfarin. If you are taking these medicines, consult your doctor before taking the test. Your doctor may advise you to stop it for a few days before the test.
The following conditions could also result in elevated levels of APTT
1. Lupus anticoagulant (antiphospholipid syndrome)
2. Heparin exposure.
3. Haemophilia A and B (Factor VIII and IX deficiency respectively)
4. Factor XII deficiency.
5. Factor XI deficiency.
6. Contact factor deficiency e.g. prekallikrein (not clinically important)
7. Artefact (incorrect amount of blood in the tube)

Book an APTT test to check your blood clotting time!

Why book the APTT test?

The APTT may be requested, along with other tests such as a PT test, when a patient presents with abnormal or excessive bleeding during menstruation
Easy bruising
When a patient has clotting time and bleeding time are abnormal.
When there are recurrent petechial haemorrhages (break opening of a blood vessel).
Thrombocytopenia (a condition where a patient has very less blood platelets).
Bleeding tendency.
Before undergoing any surgery.
Recurrent presence of blood in stool or urine.

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Frequently Asked Questions - FAQs

Is the lab technician coming for APTT test sample collection vaccinated?

Yes. Our lab technicians are fully vaccinated. They also ensure safety throughout by wearing a mask, gloves, and frequently sanitising themselves during the sample collection.

Does MFine provide the interpretation for the results along with the reports?

Yes, MFine provides the interpretation for the result along with the reports. You can also avail a free medical consultation with a doctor to understand your reports accurately. The doctor will also advise and prescribe medicines, if required, based on the results.

How can I download my APTT test report?

Login to MFine
Go to your profile
Click on Attachment and Reports
Click on Lab Report
Download the report

Are there any discount offers running on the APTT test?

Usually, you can avail of up to 50% discount on the APTT test through MFine. However, the discount and test price may vary based on lab partner and location.

What are the risks involved in taking the APTT test?

Fainting or feeling lightheaded, Hematoma (blood accumulating under the skin), Multiple punctures to locate veins, Infection (a slight risk any time the skin is broken) which are not very common.

When is the APTT test recommended?

The APTT may be requested, along with other tests such as a PT test, when a patient presents with

Unexplained bleeding or bruising, Thromboembolism (blood clot), An acute condition such as disseminated intravascular coagulation (DIC) that can cause both bleeding and clotting as coagulation factors are activated and used up at a rapid rate, A chronic condition such as liver disease, as the liver is the source of most coagulation factors, When a woman has had recurrent miscarriages, As part of an evaluation for antiphospholipid syndrome or lupus anticoagulant.

What are the reasons for the decrease in APTT test results?

A decreased APTT may result from Elevated Factor VIII. This condition occurs in an acute-phase reaction – the blood’s reaction to acute tissue inflammation or trauma. When this reaction is cured, the APTT will give a normal value, Cancer advanced (ovarian, pancreatic, colon), Disseminated intravascular coagulation (DIC) also can lead to low normal values.

Is the APTT test used for checking heparin therapy?

In some situations it is not used, like:

APTT loses its sensitivity – it will not involve the formation of clots when very high doses of heparin are used. Example: open-heart surgery
LMWH (low molecular weight heparin), which is a newer form of heparin, cannot be monitored by the APTT but does not usually require monitoring.
In patients with antiphospholipid antibodies, the APTT is unreliable

Despite these limitations, APTT is still used as the most common test to monitor heparin therapy.

What does an abnormal level in the results mean?

An abnormal (too long) PTT result may also be due to:

Bleeding disorders, a group of conditions in which there is a problem with the body’s blood clottings process like haemophilia and von Willebrand disease
Disorder in which the proteins that control blood clotting become overactive (disseminated intravascular coagulation)
Liver disease
Difficulty absorbing nutrients from food (malabsorption)
Low level of vitamin K

What causes elevated levels in the APTT test?

Lupus anticoagulant (antiphospholipid syndrome)

Heparin exposure.
Haemophilia A and B (Factor VIII and IX deficiency respectively)
Factor XII deficiency.
Factor XI deficiency.
Vitamin K deficiency
Coumarin therapy
Contact factor deficiency e.g. prekallikrein (not clinically important)
Artefact (incorrect amount of blood in the tube)

Disclaimer: The content is uniquely informative and is meant for educational use. Kindly use the content only in consultation with an appropriate certified or registered healthcare provider.