Duplex Ultrasound for Venous Reflux

A leg that tires early is a small symptom. Duplex ultrasound is the test sources name when someone wants to look at how blood moves in the veins.

This page follows the test as publishers describe it: who orders it, what it checks, and where it sits behind the hands-on exam. An overview of venous disease is a good place to read in parallel.

Who orders it

When a specialist takes a referral, the NHS says, they usually run a test called duplex ultrasound, both to confirm varicose veins and to plan treatment.

Two jobs are named there: confirming the diagnosis and planning treatment. Ask your clinician which one the scan is for in your case.

What it checks

MedlinePlus says a duplex ultrasound exam of your leg may be ordered to check how blood flows in the veins and to check for other problems with the legs, such as a blood clot.

MedlinePlus also lists questions to ask your doctor about varicose veins, and a scan question belongs on that list.

The exam comes first

According to RadiologyInfo.org, your doctor will conduct a physical exam and may also order a venous ultrasound, which evaluates vein function and checks for blood clots.

Note "may." The same source puts the scan behind the exam and treats it as optional. A scan is not automatic for every leg.

Reading the order

Put the three sources side by side. RadiologyInfo.org puts the exam first, and the NHS and MedlinePlus describe what the scan is for.

The sources used here do not set a number, a date, or a threshold for when a symptom should be scanned. If you want to know where that line sits for you, ask. RadiologyInfo.org covers evaluation and treatment of varicose veins if you want the larger picture.

Before the scan, write this down

Record which leg, when it feels worst, and how that has changed. Note any swelling, color change, or skin change you have seen, with dates. Ask what the scan result would change about the plan.

Keeping the record

Write the notes while the symptom is fresh. Readers in the Oak Lawn area can bring them to any appointment. If the visible signs are what you are comparing, a separate page covers spider veins.