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.
1 Blood-thinning medicine, such as heparin. 2  Another test, the activated partial thromboplastin time (APTT) test, may be used to find out if the right dose of heparin is being used. 3  Low levels of blood clotting factors. 4  A change in the activity of any of the clotting factors.5  The absence of any of the clotting factors.hy It Is Done. Partial thromboplastin time (PTT) is done to: 1  Find a cause of abnormal bleeding or bruising. 2  Check for low levels of blood clotting factors. 3  The lack of some clotting factors can cause bleeding disorders such as hemophilia. 4  Check for conditions that cause clotting problems.