Finding the right tests…
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Finding the right tests…
Sonography
DEEP VEIN DOPPLER BOTH checks the deep venous system in both arms or both legs for a blood clot in the same visit. Like DEEP VEIN SINGLE, the name specifies the deep veins, such as the femoral and popliteal veins, rather than the superficial veins nearer the skin, because a clot in the deep system is the one that can travel to the lungs. This entry appears to cover the same clinical study as DOPPLER BOTH LIMB VENOUS listed separately in this catalogue; both describe compression ultrasound of the deep veins on both sides. If you've been given either name, ask the centre to confirm which applies to your specific booking before your appointment.
The scan measures whether the deep veins in both limbs collapse fully under probe pressure and whether blood flow through them looks normal, at matched points on each side. A vein that resists collapsing on either limb points to a possible clot at that spot.
Deep vein thrombosis, or DVT, is a clot that forms in a deep vein, most often in the leg, and it matters because part of it can break loose and travel to the lungs, a complication called pulmonary embolism. Checking both limbs together is useful when the risk driving the concern, such as recent surgery, a long trip, or extended bed rest, affects the whole body rather than one leg specifically.
The name points at the deep venous system specifically, distinct from superficial veins nearer the skin, because that's where a dangerous clot forms. Scanning both limbs in the same visit means a clot found on one side doesn't leave the other side unchecked.
This catalogue separately lists DOPPLER BOTH LIMB VENOUS. Both entries describe compression ultrasound of the deep veins on both limbs, and they appear to be the same study under two names rather than two different tests. Confirm with the centre if you're unsure which applies to you.
The sonographer presses the probe against each vein in turn on both limbs. A healthy vein flattens under that pressure; a vein carrying a clot resists flattening, which is the main finding the scan is checking for.
They appear to describe the same underlying test, a compression ultrasound of the deep veins in both limbs. If you're unsure which name applies to your booking, ask the centre to confirm before your appointment.
A clot on one side doesn't rule out a problem developing on the other, especially when the underlying risk affects your whole body rather than one leg. Checking both sides in one visit covers that possibility.
It's pointing at the deep venous system, like the femoral and popliteal veins, rather than the superficial veins nearer the skin. A clot in the deep system is the one that risks traveling to the lungs.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
The sonographer presses the probe against each vein on both limbs in turn. A healthy vein collapses flat under that pressure; a vein with a clot inside resists collapsing.
Part of a deep vein clot can break loose and travel to the lungs, a serious complication called pulmonary embolism. Checking both limbs promptly lets your doctor start treatment sooner if a clot is found.
Yes, if your doctor has a reason to check both sides, such as a clot already found on one side or a risk factor affecting your whole body. Around half of people with a deep vein clot don't have clear symptoms.
There's no single preparation instruction that applies to every patient. Ask your doctor or the centre what they'd like you to do beforehand.