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.
To check for DVT, your doctor may recommend: 1  An ultrasound of your deep veins to check for clots. 2  A blood test to check for elevated levels of D-dimer (a sign of DVT) 3  A venography X-ray of the veins in your legs and feet to check for clots. 4  A CT scan or MRI scan of your deep veins to check for clots.