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.
Letâs look at the three tests used to determine bleeding or clotting times: 1  Prothrombin Time (PT) â this blood test measures how long it takes blood to clot and can be used to check for bleeding problems. 2  International Normalized Ratio (INR) â is a standardized way to report results of bleeding time.