ACTIVATED PARTIAL THROMBIN TIME; APTT

What this test checks

Measures the time taken for blood to clot through one part of the clotting pathway. Used before surgery and to monitor heparin treatment.

Why do people get this test?

Used to investigate bleeding disorders and monitor blood thinner therapy.

When you should consider this test

• Easy bruising or unusual bleeding
• Pre-surgery evaluation
• On heparin blood thinner

How to prepare

No fasting needed.