Colonoscopy in Korea: Why More Americans Are Looking Beyond Cologuard and Shield

Hanshin Medipia’s official website, translated from Korean using AI

 

 

Considering Cologuard or Shield?

Colorectal cancer is the second leading cause of cancer death in the United States. The friction involved in getting a colonoscopy — cost, prep, wait times, logistics — has created a growing market for alternatives. Cologuard ($599 without insurance) and Shield ($1,495 without insurance) are making it easier to enter the screening system. But both are detection tools. If the result is positive, a colonoscopy is still needed.

A colonoscopy is the only screening where the endoscopist directly visualizes the colon, and if a precancerous polyp is found, removes it during the same procedure. In Korea, a sedated colonoscopy can be added to a health checkup package for approximately $150.

 

 

Korea

Korea has one of the most developed colonoscopy infrastructures in the world, built on decades of high-volume national screening. Since 2004, Korea's National Cancer Screening Program has offered colorectal cancer screening to all adults aged 50 and older. In 2024, 66.4% of screening participants chose colonoscopy as their screening method (Korean National Cancer Screening Survey, 2024). In the United States, colonoscopy accounts for approximately 59% of colorectal cancer screening (Journal of Clinical Oncology, 2025) — but a growing share is shifting toward stool-based and blood-based tests.

In Korea, colonoscopy remains the default. This volume of procedures — repeated across thousands of gastroenterologists nationwide, year after year — builds a depth of clinical experience that is difficult to replicate in systems where the trend is moving away from colonoscopy.

The outcomes reflect this. Korea's colorectal cancer incidence is among the highest in the OECD — second only to Japan. Yet the 5-year relative survival rate is 74.6%, compared to 65% in the United States (Korea: Cancer Statistics in Korea, 2018–2022; U.S.: SEER, 2019–2023). Korea's mortality-to-incidence ratio for colorectal cancer is 0.22 — the lowest among major OECD countries (Cancer Statistics in Korea, 2022). High incidence, but the lowest death rate relative to cases. That gap is largely the result of a system built around colonoscopy — where precancerous polyps are found and removed before they progress.

 

 

Comparison

	United States	Korea (checkup center)
Referral	Typically requires a physician's order; HMO plans require PCP referral	*No referral needed — added directly to a checkup package
Gastroscopy	Usually a separate appointment; same-day possible but uncommon (~10% of cases	Combined in the same session as standard
Average wait time	~5 months for screening colonoscopy	Same-week scheduling available
Cost (without insurance)	$1,250–$4,800	~$150 as a checkup add-on

* While no referral is required, all patients undergo a pre-procedure health assessment to confirm they are fit for colonoscopy, in accordance with standard safety protocols.

 

 

What a Colonoscopy Can Find

A colonoscopy examines the entire length of the large intestine through direct visualization. Unlike stool or blood-based tests, the endoscopist can see the tissue surface and act on findings during the procedure.

Conditions a colonoscopy can detect:

• Adenomatous polyps — the precancerous growths most likely to become colorectal cancer. Found in up to 25–30% of screening colonoscopies in patients over 50.
• Colorectal cancer — early-stage cancers that may have no symptoms. When caught early through screening, the 5-year survival rate exceeds 90%.
• Inflammatory bowel disease — Crohn's disease and ulcerative colitis, which require ongoing monitoring.
• Diverticulosis — common in adults over 50; usually benign but sometimes requiring follow-up.

When polyps are found during a colonoscopy in Korea, they are typically removed in the same session — a procedure called polypectomy. The removed tissue is sent for pathology.

One practical note for travelers: if polyps are removed during the procedure, it is generally recommended to wait approximately two weeks before flying. This is worth factoring into your travel schedule when planning a health checkup in Korea.

 

 

Yonsei Mirae IFC's Official Website

 

 

Quality & Safety

Colonoscopy is a routine procedure at major Korean health checkup centers. Personally, I do not have a family history of colorectal cancer, but after I entered my 40s, I decided to get my first colonoscopy two years ago as part of a preventive health checkup. For low-risk adults with no significant findings, a colonoscopy typically does not need to be repeated for another five to ten years, which makes the commitment feel much more manageable.

At major Korean checkup centers, colonoscopy is performed by trained physicians under structured endoscopy protocols, including bowel preparation, sedation monitoring, infection control, and post-procedure recovery checks. Serious complications are uncommon, especially for diagnostic colonoscopy, although risks such as bleeding or perforation can occur, particularly when polyps are removed.

To put the volume in perspective: Hanshin Medipia, one of Himedi’s key checkup partners, performed 66,559 endoscopy procedures in the past year alone. Our partner centers also operate current-generation endoscopy systems such as the Olympus EVIS EXERA III (CV-290), reflecting Korea’s rapid adoption of advanced diagnostic equipment.

Olympus EVIS EXERA III (CV-290): A high-end endoscopy system that provides clearer, more detailed imaging

 

 

A Different Approach to Preventive Screening

In the United States, non-invasive tests like Cologuard and Shield are making it easier for more people to enter the screening system. In Korea, colonoscopy itself is the entry point — a routine part of preventive care rather than a follow-up step after a positive result.

There is also a long-term cost consideration. Cologuard is recommended every three years. FIT is recommended annually. If either comes back positive, a colonoscopy is needed anyway. A colonoscopy with no significant findings, on the other hand, typically does not need to be repeated for five to ten years. For those who are already planning a trip to Korea, adding a colonoscopy to a health checkup may be more economical — and more conclusive — than repeating detection-based tests over time.

For Americans considering a health checkup in Korea, or those looking for faster access to a colonoscopy, understanding this difference in approach is a useful starting point.

Interested in booking a colonoscopy in Korea? Contact Himedi to get started.

 

 

About the Author

Donkyo Seo
Co-founder & CEO, Himedi

For the past 9 years, Donkyo has helped international patients navigate Korean healthcare. Himedi is licensed by Korea's Ministry of Health & Welfare (License #A-2016-01-01-2345). 

 

 

Sources

Colorectal cancer statistics

• American Cancer Society. Colorectal Cancer Facts & Figures, 2023–2025.
• National Cancer Institute, SEER Program. Cancer Stat Facts: Colorectal Cancer. 5-year relative survival rate: 65% (U.S., 2019–2023); localized stage: 90.9%.

Korea screening data

• Korean National Cancer Screening Survey, 2024. Colorectal cancer screening rate: 74.4%; colonoscopy preference: 66.4%. Reported by Korea Biomed, March 2025.
• Cancer Statistics in Korea: Incidence, Mortality, Survival, and Prevalence in 2022. 5-year relative survival for colorectal cancer: 74.6% (2018–2022); mortality-to-incidence ratio: 0.22.

U.S. screening modality data

• Journal of Clinical Oncology, 2025. Trends in utilization of colorectal cancer screening modalities among patients with average risk in the United States from 2017 to 2023. Colonoscopy share: 58.7% (2023).

U.S. colonoscopy access

• American College of Gastroenterology, 2025. Mean wait time for average-risk screening colonoscopy: approximately 5 months.
• GoodRx; CostHelper. Colonoscopy cost without insurance: $1,250–$4,800.

Screening test pricing

• Exact Sciences. Cologuard self-pay price: $599.
• Guardant Health. Shield cash-pay rate: $1,495 (effective August 2024).

Screening intervals

• American Cancer Society. Cologuard (mt-sDNA): every 3 years. FIT: annually.
• U.S. Multi-Society Task Force on Colorectal Cancer. Normal colonoscopy: repeat in 10 years; 1–2 small sessile serrated polyps: 5–10 years.

Bidirectional endoscopy

• JAMA Internal Medicine, 2019. Same-day bidirectional endoscopy accounts for approximately 10% of endoscopy procedures in the United States.

Polyp prevalence

• PMC / American Academy of Family Physicians. Adenomatous polyps found in approximately 25–30% of screening colonoscopies in patients over 50.