🩺 Affordable Private Healthcare

Coagulation (PT, aPTT, INR)

Price
£135

Turnaround

12 hours

Appointment

15 minutes

Coagulation test tube

Find Out More

4.8
4.8/5
4.7
4.7/5
Care Quality Commission
Primary Care & Diagnostics Finalist Award

pound iconPrice: £135

Turnaround: 12 hours

Appointment: 15 minutes

Coagulation Tests Overview

Coagulation tests, which are PT, aPTT, and INR, are vital blood tests used to assess the efficiency of blood clots.

These are critical tests to be carried out for patients on anticoagulant therapy. Over 10 million tests are carried out every year. The test is highly utilised for diagnising disorders in clotting, drugs causing blood thinning, such as warfarin, and assessing the functioning of the liver.

Coagulation Screening Explained

  • Prothrombin Time (PT): This test is designed to measure the time it takes for blood to clot and to determine the functioning of some clotting factors or proteins produced in the liver.
  • Activated Partial Thromboplastin Time: The effectiveness of another group of clotting factors is assessed through this test.
  • International Normalised Ratio (INR): This is the standard version of the PT test. In short, the INR is a standardised unit that measures the time it takes for the blood to clot. It is particularly helpful in monitoring patients on anticoagulation therapy because it maintains their medication levels within proper ranges.

Why Are Coagulation Blood Tests Important?

Coagulation tests help diagnose blood disorders, such as haemophilia or von Willebrand disease, or problems that affect blood clotting within blood vessels .

Thus, if one has excessive bleeding, is prone to bruising, or suffers from unexplained blood clots, these tests will reveal the possible issues.

Because many of the clotting factors used by your body are manufactured in the liver, abnormalities of coagulation tests can give a hint towards any liver condition or damage, which requires further investigation.

 

Woman doctor smiling
Woman doctor taking notes

When Should You Get Tested?

Coagulation tests may be necessary if you are:

  • Scheduled for surgery or a procedure that may cause bleeding.
  • On long-term anticoagulant therapy.
  • Suspected of having a blood clotting disorder or liver disease.
  • Experiencing symptoms like excessive bruising, bleeding gums, or blood in urine/stool.

Understanding Your Results

The normal ranges for coagulation tests are as follows:

  • Prothrombin Time (PT): 11-13.5 seconds.
  • Activated Partial Thromboplastin Time (aPTT): 30-40 seconds.
  • International Normalised Ratio (INR): 0.8-1.2 for individuals not on anticoagulants and 2.0-3.0 for patients on warfarin.

Statistics​

Of coagulation tests detect clotting disorders.
0 %
Of surgeries require coagulation screening.
0 %
Of UK adults require coagulation tests yearly.
0 %
Of abnormal INR results indicate liver issues.
0 %

How To Book A Blood Test?

book online or call us

Use our online booking engine or book your test by giving us a call.

Choose your test type

On the online booking engine select the “appointment type” you need.

meet with our experts

You will be seen by one of our friendly phlebotomists or trained clinicians.

Procedure

Type of sample taken: Blood
preparing for appointment

Preparing for test

Most coagulation tests do not require fasting. However, your healthcare provider may ask you to avoid certain medications that can affect clotting, such as blood thinners before the test. Inform your doctor about any medications or supplements you are taking.

during the appointment

During the test

A blood sample will be taken from a vein, usually in your arm. This process typically takes only a few minutes. To reduce any discomfort, relax your arm and focus on breathing. Let your healthcare provider know if you have any concerns about blood draws, such as fainting or a fear of needles.

post appointment

Results

Your results will typically be available within a day or two. For urgent cases, they can be expedited. Based on your results, your healthcare provider may adjust any medications (especially blood thinners) or order further testing.

Why Choose Walk In Clinic
for blood testing

No
Hidden Charges

Transparent fees. The price you see is the price you pay.

No GP consultation
needed

No GP appointment requirement for blood tests

Established
since 1998

Experienced doctors & a professional team.

Strictly
confidential

Your medical records are kept private at all times.

testimonials​

Blood Test Biomarkers

pricing

Coagulation (PT, aPTT, INR) Blood Test

see other blood tests

Book Your Blood Test Today

We offer a wide range of private blood tests in London. Same-day appointments are available 5 days a week.

Specialist Medical Team

We work with experienced consultants & healthcare professionals who have received positive feedback from our patients, and with whom we have established long-term relationships.

fAQ

Why might I need a coagulation test?
Coagulation tests are ordered if you have symptoms of a bleeding or clotting disorder, such as unexplained bruising, excessive bleeding, or blood clots. They are also used to monitor patients on anticoagulant therapy or prior to surgery.
What do abnormal PT, aPTT, or INR results mean?
Abnormal results could indicate a clotting disorder, liver disease, vitamin K deficiency, or the effects of medications like warfarin or heparin. High PT or INR values may suggest that your blood is clotting too slowly, increasing the risk of bleeding, while low values may indicate a risk of clot formation.
What conditions can coagulation tests diagnose?
Coagulation tests can help diagnose conditions such as haemophilia, von Willebrand disease, deep vein thrombosis (DVT), pulmonary embolism (PE), liver disease, and vitamin K deficiency, among others.

Listen To The Podcast

Latest Episode

Tune in to our podcast to explore the world of healthcare and learn from distinguished special guests. We cover everything from preventative measures to cutting-edge treatments so that you can stay informed and up-to-date on health-related things.

related news

join our newsletter

Subscribe for latest updates & news

Open chat
Walk-In Clinic Support
Welcome to the Walk-In Clinic 👋
How can we help you?