Pathology: Blood or qi deficiency. This is seen in cases of deficiencies and failure of Qi and blood. It can also be seen in disharmonies of the even emotions, weakness in Yang Qi, internal damage to jing, and penetration of dampness.
Testing for venous blood clots. Venous blood clots may be detected in a variety of ways, though ultrasound is most commonly used. Occasionally, the patient's size and shape limit the ability for ultrasound to provide a definitive answer. Venography is an alternative test to look for a clot.
Updated April 21, 2016. Before you have surgery your doctor may order blood tests to determine how quickly your blood clots. This group of tests is known as a coagulation study, individually these tests are commonly referred to as a PT (Prothrombin Time), PTT(Partial Thromboplastin Time), and INR (International Normalized Ratio).