Tests · Thyroid ultrasound

Ten minutes,
and the reason Korea found so many thyroid cancers.

A thyroid ultrasound is a painless, radiation-free scan of the gland in your neck, and it is the test that made Korea a case study in overdiagnosis. It finds nodules in a large share of healthy adults, most of which will never cause harm. That is worth knowing before you have one, not after.

10 min
Scan time

A probe and gel on the neck. Nothing injected, nothing swallowed.

0 mSv
Radiation dose

Sound waves only.

₩80,000
Standalone price

A partner centre's published non-covered price. (≈$60)

₩900,000
Cheapest program including it

Medione B-1. Precision - Major Cancer Checkup, the cheapest programme that includes the scan outright rather than as one of a choice. (≈$671)

From 1 wk
Earliest slot

One week is the earliest an imaging slot can be held, and there is no referral step before it.

~1 wk
Full written report

English report in your hands in about a week. You also get a consultation on preliminary findings on the day of the screening, before you leave.

Programme contents and prices from each partner centre's own foreigner-facing published list, read 2026-08-05: KMI Global and Hanaro Medical Foundation's English site. Standalone per-test prices are a Korean partner centre's 비급여 (non-covered) posting, the itemised list 의료법 제45조 requires a clinic to publish, read the same day. Scheduling and report turnaround are Meridiko's own operating figures, confirmed 2026-08-06, not a centre's published ones (https://global.kmi.or.kr/examination/foreigner_examination; https://en-mobile.hanaromf.com/program/prog01/prog01_01.jsp), measured 2026-08-05. Dollar figures are converted from each centre's won price at ₩1,342 = $1 (open.er-api.com, 2026-09-13). The won figure is the price; the pairing moves with the rate.

What it finds, and what it does not

What it finds, and what it does not.

Nodules, cysts and enlargement in the thyroid, with their size and appearance. It is the test that decides whether a needle biopsy is even worth discussing.

It cannot tell you whether a nodule is cancer. That takes a fine-needle aspiration, and most nodules never need one. It also says nothing about whether the gland is working, which is a blood test.

Suitability

Who it suits, and who should not have it.

Suits: Anyone with a lump they can feel, a family history of thyroid disease, or a previous nodule being watched. Also anyone who wants the neck looked at once with a clear head about what a finding would mean.

Should not have it: Nobody, on safety grounds. The argument against it is not risk from the scan, it is what happens after a finding. If you would struggle to leave a small, low-risk nodule alone under observation, that is worth thinking about before booking rather than after.

In context

How it differs from the related test.

A thyroid ultrasound looks at structure; a thyroid blood panel (free T4 and TSH) looks at function. They answer different questions and a normal result in one says nothing about the other. Every entry program on this site includes the blood panel; the ultrasound is added higher up the ladder.

Which tier includes it

Not itemised on any tier.

Not itemised in every band this site prices. Medione includes a thyroid ultrasound outright in its B-1. Precision - Major Cancer Checkup and in its two Premium programmes, both Hanaro programmes carry it, Severance includes it from Premium upward, and KMI's SIGNATURE and NOBLE offer it as one of a choice. Where a programme leaves it out, Severance sells the scan as an add-on.

SEE THE FULL TIER LADDER
Related tests

Often booked together.

Full blood panel

The baseline every program includes. Because the scans need context.

Tumor marker panel

A blood draw. Read alongside your imaging, not instead of it.

FAQ

Questions worth asking before you book.

Will it find something?
Quite possibly. Thyroid nodules are common in healthy adults and become more common with age. Finding one is not the same as finding a problem, and a good report says which category a nodule falls into rather than leaving you to guess.
Does it hurt?
No. A probe and cool gel on the front of the neck for about ten minutes. You may be asked to swallow or tilt your head back.
Do I need to fast?
No. Fasting is for the bloods and the endoscopy, not for this.