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.
You may be sent for one or more of the following tests: 1  Venous ultrasound: This test is usually the first step for confirming a venous blood clot. Sound waves are used to create a view of your veins. 2  Chest CT scan: If your doctor suspects you have a pulmonary embolism, you may undergo a CT scan.