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.
This is a test general used in the hospital to measure who long it takes it clot, usually used to measure the use action of a clot prevention medication called Heparin. It is also used as a screening test to check for people who may have clotting abnormalities, either getting clots or bleeding excessively.