APTT test or activated partial thromboplastin time test is one of the hematological tests performed during routine health check-ups, liver function tests, blood clotting disorders or mandatory tests before surgery.

When an accident occurs that damages or ruptures a blood vessel, the clotting and hemostasis processes occur rapidly to respond and tightly control the damaged area.

The principle of treating vascular injuries is to provide first aid properly and quickly to maintain the patient's vital functions. First aid for vascular injuries must be urgent and quick, because the longer it is left or delayed, the more blood will be lost, and over time, more blood will be lost, leading to shock and death for the injured person.

Blood clotting plays a very important role, directly affecting human health and life. Therefore, when the body has abnormalities between coagulation and anticoagulation factors, if not detected early and treated promptly, the patient will be in great danger. Blood clotting function tests will help doctors detect abnormal substances that stop bleeding and clot blood.

Bleeding time test is indicated when the patient needs to undergo surgery or stop bleeding urgently in case of trauma. The result will reflect whether the blood clotting process is working properly or not.