Peripheral Venous tests look for blood clots or obstruction to venous flow (flow of blood back to the heart) primarily in the legs and sometimes the arms.
The tests are comprised of ultrasound imaging, just like the Carotid Duplex exam, by pressing the ultrasound probe onto the leg or arm to determine compliance or presence of obstruction. The test is very simple: a little gel will be applied to the imaging site and the technician will gently push the probe onto the site to determine compliance or presence of obstruction.
Your physician will see the recorded images and give you your results. These results can then be measured again in the future to see changes and effectiveness of therapies; you just compare the pictures and measurements. No prior preparation is needed. It is painless, remarkably easy, highly reliable, and very accurate.