Carotid Ultrasound (Intima-Media Thickness / Plaque)
Last reviewed 25 August 2026 · Evidence-graded review — see Methodology
Ultrasound assessment of carotid artery wall thickness and any plaque, frequently marketed as a “vascular age” or stroke-risk test. Carotid plaque does reflect systemic atherosclerosis, and high-grade stenosis can directly cause stroke — which is what makes the sales pitch plausible and the guideline position worth reading carefully.
The US Preventive Services Task Force gives screening for asymptomatic carotid artery stenosis a “D” recommendation — that is, actively against it — with moderate certainty that the harms outweigh the benefits. Those harms are unnecessary downstream imaging and procedures arising from false positives, plus procedural complications from unindicated intervention. No externally validated method reliably identifies which asymptomatic adults are genuinely at increased stroke risk from an incidental carotid finding.
USPSTF Recommendation Statement, JAMA 2021. PubMed: PMID 34058106
Singapore guidance
Not covered in the current review
Singapore’s national screening committee has not reviewed this test in the current volume of its report, which covers nine conditions. That is not a verdict either way.
Source: Screening Test Review Committee report 2026, Volume 1 (Academy of Medicine Singapore and Ministry of Health, February 2026). The full national list · How this is used.
What you would actually pay
- Healthier SG
- Not subsidised
- MediSave
- Not among the screenings named for outpatient claims
Source: Healthier SG Screening (HealthHub) and MediSave outpatient care (Ministry of Health). Absence from either list is not a statement that the test is discouraged — only that no subsidy or claim applies. Gross prices compared.
What it costs when it is wrong
- Basis
- No published harm criterion found
- Severity
- Not documented
Not covered in the current volume of the committee’s report, so no harm criterion was found either way.
An empty finding, not a clean bill of health: this means nothing documented was found for this test. It is not a claim that the test is safe.
Screening harm is not only a laboratory question: the committee’s own criteria advise against a test when “the screening test, or follow-up tests arising from a positive screen, are associated with significant medical risks”. Sources on overdiagnosis → · How this is graded.
FAQ
Is the Carotid Ultrasound (Intima-Media Thickness / Plaque) worth doing in Singapore?
Carotid Ultrasound (Intima-Media Thickness / Plaque) holds a weak evidence grade under our screening rubric. It typically costs S$150–300 in Singapore. It is most appropriate for patients with focal neurological symptoms (TIA/stroke workup) or a carotid bruit on exam — not general screening. It is not recommended for asymptomatic screening.
Weighing this against something else? Compare it with two other tests → · Price it inside a panel →