Cancer screening packages in Korea: what to know before adding PET-CT

Published 17 September 2026 · Last updated 27 September 2026 · 9 min read · By Jae Han

What Korean 'cancer screening' add-ons contain, what each test can and cannot tell you, and the questions to ask before paying for whole-body imaging.

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Korea runs a national screening programme for its own residents covering a short list of common cancers. The packages sold to visitors go well beyond that list. More tests is not the same thing as better screening, and a good centre will say so when you ask.

#What Korea screens its own residents for

The national programme is a useful yardstick, because it shows which tests the country's own cancer authority considers worth doing in people without symptoms. It is short, and whole-body imaging and blood tumour-marker panels are not on it.

#What the add-ons usually are

#What the evidence supports, briefly

• The US National Cancer Institute lists a small set of screening tests shown to reduce cancer deaths: mammography, cervical screening, colorectal screening by colonoscopy, sigmoidoscopy or stool tests, and low-dose CT in heavy smokers
• For lung screening, the US Preventive Services Task Force recommends low-dose CT for adults aged 50 to 80 with a 20 pack-year history who smoke or quit within 15 years. Korea's own programme uses 54 to 74 and 30 pack-years. Neither recommends it for people who have never smoked
• The same USPSTF review reports false-positive rates of roughly 4% to 27% across the two largest trials, in a group chosen because their risk is high. In a low-risk person the balance is worse
• On blood tumour markers, the NCI says they are neither sensitive nor specific enough for screening: they miss some cancers and rise in some harmless conditions

#PET-CT specifically

PET-CT was developed for staging and following known cancers, which is where its evidence lies. As a screening test in people without symptoms it does not appear in the Korean national programme or in the NCI's list. It is sold in premium packages because it is available and sounds thorough. That does not make it useless for you: a strong family history or a previous cancer changes the calculation. But the case should come from a doctor who has seen your history, not from a brochure.

Practically: the NHS describes six hours of fasting with water only, no strenuous exercise for up to 24 hours beforehand, about an hour of waiting after the tracer injection and 30 to 60 minutes in the scanner. Afterwards you are asked to avoid close contact with young children and pregnant women for a period the staff specify. Any radiation exposure carries a small added risk, which is one reason doctors prefer a reason for the scan.

#The cost you do not see on the price list

Every test has false positives. The wider the net, the more likely you fly home with a finding that is 'probably nothing, repeat in six months'. The add-on table above shows where these come from: low-dose chest CT often finds small lung nodules, abdominal imaging finds cysts, and a tumour marker can be raised for a harmless reason. For a resident each of those means another appointment at the same hospital, with the earlier scan on the screen for comparison. For a visitor it means finding a doctor at home willing to follow up another country's scan, or paying for another trip.

Two things reduce that cost. The first is comparison: a nodule that is new and a nodule that has been stable for five years look the same on one scan and mean very different things, so previous images sent ahead can turn a 'repeat in six months' into 'no change'. The second is the follow-up letter: a report that states the size and location of anything to be re-scanned, and the interval, is something a doctor at home can act on, whereas a line reading 'small nodule, follow-up advised' is not. Before adding a test, ask the centre what happens next if it shows something unclear, and whether that next step can happen before you fly.

#What a screening add-on is priced on

• PET-CT and MRI are usually priced as separate add-ons even inside premium tiers. Ask for each add-on's price on its own line, with the tracer or contrast dye included or stated separately
• Often extra: sedation, polyp removal and pathology, biopsies, contrast dye, a doctor's results consultation, report translation and copies of the images
• Always extra: anything a finding leads to (a repeat scan, a specialist appointment, a biopsy in another department), billed as ordinary outpatient care
• The structure of a whole package, tier by tier, is in the packages article; this list is only what changes when cancer-specific imaging is added

Verify before you rely on this: Package contents, prices and the radiation dose involved differ by hospital, and foreign visitors pay privately outside national health insurance. Ask for the itemised test list and the price of each optional add-on before you book rather than choosing on the day. HIRA's April 2019 notice on per-hospital disclosure of non-covered prices, explained in the packages article, gives a Korean reference point for a single add-on such as an MRI or PET-CT. Travel insurance does not normally pay for elective screening or for following up what it finds; see the insurance guide linked below.

#Planning the trip

1. 3–4 weeks beforeSend your history, family history, smoking history and medication list. Ask the centre's doctor which tests they would include and leave out. Post or upload previous scans.
2. 2–3 days beforeLow-fibre diet if a colonoscopy is included. No strenuous exercise the day before a PET scan.
3. Day 1Arrive, rest, early dinner, start fasting. Bowel preparation on the centre's schedule.
4. Day 2Bloods, imaging and endoscopy. With PET-CT or an MRI series the tests often spill into a second morning.
5. Day 3–4Second morning of tests if needed, then the results consultation. This is the appointment that sets your departure date. The planning default of four to five nights is built from it: one night to arrive and start the NHS's six-hour PET fast, one or two mornings of tests, the results consultation the day after the last scan, and one clear day in case a biopsy is suggested.
6. Back homeFull report and any pathology follow, typically within one to two weeks. Hand the report and the images to your own doctor, including the 'repeat in six months' items.

#What to ask the centre's doctor before adding a test

1. Given my age, family history and smoking history, which of these would you recommend, and which would you leave out?
2. What is the radiation dose of the CT and PET-CT in this package?
3. Who reads the images, and will I get the images themselves as well as the report?
4. If something needs a biopsy, can it be done during my stay, and how long does pathology take?
5. Will the report be in English, and will a doctor go through it with me?
6. If a scan shows something unclear, what is your usual next step, and can it happen before I fly?
7. Does the CT use contrast dye, and what do you need to know about my kidneys, thyroid, diabetes medicine or allergies first?
8. Will you write a follow-up letter my doctor at home can act on, with the measurements of anything to be re-scanned?

#Who a screening doctor will trim the list for

• Anyone with symptoms. That calls for a diagnostic appointment with a specialist; a screening package is slower and less targeted
• Anyone who is or might be pregnant, or breastfeeding. The NHS asks patients to tell staff before CT and PET, and gives separate advice on breastfeeding after a PET tracer
• People with kidney or thyroid problems, diabetes or a previous reaction to contrast dye should declare it before any contrast CT; the NHS lists all of these
• People who had the same scan recently. Repeating CT or PET within months adds radiation and rarely adds information; bring the old images instead
• People under the ages at which screening programmes start, without a family history. A doctor will often advise a smaller set of tests

Practical note: Send previous scans as image files, not as reports alone, and ask the centre to confirm it has opened them before you fly. On the way out, the imaging disc (영상CD) and record copy (의무기록사본) are requested at the hospital's documents desk by those Korean names; the second-opinion article sets out the desk procedure and the identification it asks for.

A clear screening result does not rule out cancer, and an abnormal one does not confirm it. If you have symptoms, you need a diagnostic appointment with a specialist, not a screening package.

#Common questions

Is a whole-body PET-CT worth it for cancer screening?

For most people without symptoms or a strong risk factor, the published screening programmes say no by omission: it is not on Korea's national list or the NCI's list of tests shown to reduce deaths. It may be reasonable in particular circumstances. Ask a doctor to make the case for your situation.

Can a blood test detect cancer?

Not reliably on its own. The NCI's position is that tumour markers are useful mainly for monitoring known cancers, and that newer multi-cancer blood tests are still being studied. A raised marker leads to more tests; a normal one proves nothing.

Can a biopsy be done during the same trip if the screening finds something?

In a hospital-based centre, often yes: the referral to the relevant department can start during your stay, at ordinary outpatient prices, and a biopsy or endoscopic removal may fit within a few days. The pathology result takes days on its own clock, so it may follow you home. A stand-alone screening centre refers you elsewhere instead. Ask the question before you book, and keep the return fare changeable.

What happens if the screening finds something?

Usually one of three things: nothing further, a repeat scan after some months, or referral to a specialist. The NHS describes the same pattern for colonoscopy: polyps are removed and tested, and a suspected cancer is referred on quickly. Ask for the finding's size, location and the interval in the written report, so that a doctor at home can act on it.

How much radiation is in a screening CT or PET-CT?

It varies by scanner and protocol, which is why the question belongs to the centre. The NHS wording is that the added cancer risk from CT is very small and mainly a concern with many scans. Low-dose chest CT uses less than a standard CT; PET-CT combines a tracer and a CT and is typically the largest single dose in a package. Ask for the figures.

Work out the whole trip: open the total cost calculator with 4 nights filled in. That is a planning default, not a schedule — replace it with the dates your own clinic gives you.

Planning the trip? Tick off the trip checklist — what to get in writing, what to pack and which documents to collect before you fly home — and keep the Korean phrase cards on your phone for taxis and pharmacies.

This site is an information resource, not a medical provider, agency or broker. We do not arrange treatment, refer patients to specific hospitals, or receive commission from clinics for introductions. Nothing here is medical advice — decisions about treatment belong to you and a licensed doctor.

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