Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test
Coagulation Studies (including INR, PT and APTT) Blood Test

Over 250k Biomarkers Tested

Coagulation Studies (including INR, PT and APTT) Blood Test

$45.00 AUD

On warfarin or other blood thinners, preparing for surgery, or investigating unexplained bleeding or bruising?

Comprehensive clotting assessment measuring INR, PT, and APTT. Monitors warfarin therapy, evaluates bleeding disorders, and assesses clotting function before surgery.
Collection Location
Specimen Type

You will be emailed a referral to take to your local collection centre. If you ever have any questions, we're here to help.

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How It Works

Getting your health measured shouldn't be hard! We're here to help you every step of the way.

1
Order a test

Order a test

Order the private test that suits you and your goals. After ordering, you will receive your referral by email.

2
Collect the sample

Collect the sample

Attend one of our 4000+ partner collection centres throughout Australia. Search locations.

3
Receive your results

Receive your results

View all your lab results in your secure health dashboard. Easy!

Overview

Coagulation studies measure how quickly your blood clots through different pathways. This panel includes three complementary tests that together assess your complete clotting function.

PT (Prothrombin Time) measures the extrinsic clotting pathway. INR (International Normalised Ratio) standardizes PT results for warfarin monitoring. APTT (Activated Partial Thromboplastin Time) measures the intrinsic pathway, useful for heparin monitoring and hemophilia screening, available across Australia.

These tests are essential for anticoagulant therapy monitoring, pre-surgical assessment, and investigating bleeding or clotting disorders.

Symptoms

Essential for people on anticoagulant therapy, preparing for surgery, with bleeding disorders, liver disease, or unexplained bleeding/bruising.

Questions

  • PT measures extrinsic pathway clotting time. INR standardizes PT for warfarin monitoring. APTT measures intrinsic pathway. Together they assess overall clotting function.
  • INR standardizes PT results across laboratories, allowing consistent warfarin dosing regardless of which lab performs the test.
  • Typically 2.0-3.0 for most conditions, 2.5-3.5 for mechanical heart valves. Your target depends on your specific condition.
  • Warfarin therapy, liver disease, vitamin K deficiency, and clotting factor deficiencies can prolong PT/INR.
  • Heparin therapy, hemophilia, von Willebrand disease, lupus anticoagulant, and factor deficiencies can prolong APTT.
  • Initially weekly until stable, then every 2-4 weeks. More frequent testing if INR is unstable or after medication/diet changes.

Dr. Vu Tran
Bloody Good’s Chief Medical Officer

3 Biomarkers Tested

How to prepare

After the test

Your test results will be available in your private dashboard. If there are any urgent issues, we'll let you know so you can follow up with your health professional.

Understanding results
Testimonials

What Our Customers Say

4.9
Average Rating
5,500+ Customers Tested
250,000+ Individual Biomarkers
A
Adam O. ACT

Simple health checks in my control

I didn't know that private blood tests were an option. Tried this platform as the packages suited what I wanted for a good price. Easy to follow instructions, and super quick results. Platform provides more information than my gp's ever have on the tests and what the results meant. Would like more clinics to be able to test at (specifically Capital Pathology) but there is a decent network. Will continue to use.

The Performance Check
W
Wayne S. NSW

Bloody Good

This is a great service, very helpful support, cheaper than going to the doctor for a blood test

Vitamin D (25-OH)
C
Christopher N. NSW

Quick access to blood tests

BLOODY GOOD is a very efficient route to access blood testing for a visitor outside the Australian health system. It is quick with the necessary referral and documentation, and quick with results. Thank you

Full Blood Count (FBC) Blood Test
R
Rebecca Y NSW

Great Service!

Fantastic service to deal with, I love the extra explanations for all the tests.

Glycated Haemoglobin (HbA1c)
O
Olga B. New South Wales

Convenient

Getting a referral was easy. Laverty pathology accepted it. Bloody Good offers an affordable and convenient way to check essential blood markers.

hs-CRP Blood Test
M
Marita S. Queensland

Bloody good test

Very comprehensive tests that have given me a good picture of my overall health.

The Bloody Good Test
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Lukas C. NSW

Quick, easy, hassle free

Excellent service, quick, easy, hassle free, can recommend.

Testosterone Free/Total + SHBG
A
ABDUL S. QLD

Amazingly quick and efficient

Very easy to use. Love that it stores your blood tests.

The Performance Test
A
Andre D. QLD

5 Stars

Efficient and easy to use

Prostate-Specific Antigen (PSA)
W
Wayne NSW

5 Stars

Extremely helpful company

Calcium Blood Test
"I'm a little biased as I work here! However, I love that The Bloody Good Test tracks my health over time. After turning 40, I wanted to make sure I wasn't going to drop dead from something basic I should have known about earlier. Measuring all my core biomarkers each year gives me peace of mind my health is on the right track"
Cameron Smith Head of Ecommerce, Brisbane

Frequently Asked Questions

Most collection centres accept walk-ins. Some may require a booking - check details when you click on your chosen location.

If your test needs fasting, we’ll include that in your instructions after you order. Fasting usually means no food for 8–12 hours, but water is fine.

Just your pathology referral form (we email it to you)

Of course. Just maybe don’t bring the friend who faints at the sight of blood.

They’re the highly trained professionals who take your blood sample - with a steady hand and a sharp needle. They love blood, but don’t worry… they’re not vampires. Just legends who make blood tests quick, clean, and (almost) painless.

Some of our tests include Urine, Stool, Saliva and more. Each test will have a clear description on what sample you will need to give and instructions on how.