6th July 2026

A 42-year-old female attended hospital with a 3-day history of swelling and erythema to her left leg.

A 42-year-old female attended hospital with a 3-day history of swelling and erythema to her left leg. There is no history of trauma or recent surgery or immobilisation. Her past medical history includes psoriasis and hypothyroidism, and she takes regular levothyroxine.  You suspect she may have a DVT and calculate her Wells score as 3. A pregnancy test is negative and D-dimer levels have already been taken. What is the most appropriate next step?

Select the SINGLE most appropriate option from the list below. Select ONE option only.