Optional medical device diagnostics – depending on the results of the history, physical examination, laboratory diagnostics, and obligatory medical device diagnostics – for differential diagnosis.
- Sonography (ultrasound)
- Compression phlebosonography (KUS, synonym: vein compression sonography); sonography (ultrasound examination) to document and check the compressibility of the deep veins in the legs and arms) – in cases of suspected deep vein thrombosis (DVT); very safe procedure, especially in cases of thrombi of the femoral veins or popliteal vein [gold standard].
- Phlebography (representation of the veins by means of contrast agent administration in conventional X-ray) – indicated in sonographically unclear findings.
- Angiography (radiographic imaging of the arteries).