Updated August 18, 2026
Guide scope: These resources were supplied for Bloom clients attending KMI in Seoul, Korea. Documents last confirmed with KMI in June, 2026. Instructions can vary by location, procedure, medication and medical history.
If your KMI health checkup includes gastroscopy, colonoscopy or an M2-PK stool test, you’ll need to prepare before your appointment. This page helps you identify the correct KMI guide and flags the steps that may require advance planning, including collecting a stool sample or picking up colonoscopy preparation medication.
(If you’re looking for a complete appointment-day checklist, start with our general guide to preparing for a KMI health checkup).
Always follow the clinic document provided for your specific test, location and appointment date. If anything in the guide is unclear, Bloom can confirm the instructions directly with KMI before your visit.
Important: Incomplete preparation can affect the examination and may result in a test being postponed or repeated.
To prepare for your visit:
- Identify which test you are scheduled for
- Download the official preparation guide below
- Follow the instructions exactly as written
Even small details, such as food restrictions or medication timing, can affect whether the examination can proceed.
Some procedures, especially colonoscopy, gastroscopy, and stool-based screening tests, require specific preparation before your appointment. These instructions must be followed carefully so the medical team can properly perform the examination.
To make sure you receive the most accurate and up-to-date guidance, we recommend following the official preparation documents provided directly by KMI.
Rather than rewriting or summarizing the instructions ourselves, we have linked the original guides below so you can review and follow them exactly as provided by the clinic.
Which preparation guide do you need?
Depending on your health examination package, you may need to prepare for one or more of the following:
- Gastroscopy (Upper Endoscopy)
- Colonoscopy
- M2-PK Stool Screening Test
Scroll below and download the preparation guide that applies to your test.
How do you prepare for gastroscopy?
Gastroscopy allows doctors to examine the esophagus, stomach, and upper digestive tract using a small camera.
During the procedure, the medical team may perform a biopsy or additional tests if any abnormalities are detected.
Certain medical conditions or medications may affect whether sedation can be used, and some patients may need to take additional precautions before the procedure.
For example:
- Sedation may not be recommended for some patients with certain medical conditions
- Driving is not allowed after sedated endoscopy
- Patients should rest after the procedure and avoid any strenuous activities
Please review the full preparation document carefully before your appointment.
Source: KMI Medical Check-up Center supplied to Bloom Korea. Last confirmed: June 2026
How do you prepare for a colonoscopy?
A colonoscopy allows doctors to examine the inside of the large intestine to check for polyps, inflammation, ulcers, or early signs of colon cancer.
Because the colon must be completely clean for the doctor to see clearly, preparation is extremely important. If the bowel is not properly cleaned, the exam may need to be rescheduled or repeated.
IMPORTANT:
- Colonoscopy preparation must be followed exactly. If the bowel is not properly cleaned, the examination may need to be rescheduled or repeated.
- To prepare for colonoscopy, you will need to visit the KMI clinic in advance to pick up the bowel preparation medication kit.
Preparation typically includes:
- Avoiding certain foods several days before the exam
- Following specific fasting instructions
- Taking bowel cleansing medication (pick up kit from hospital in advance) according to the schedule provided
The timing of meals, fasting, and bowel preparation medication is very specific and must be followed carefully. Please download and follow the official guide provided by KMI
Source: KMI Medical Check-up Center supplied to Bloom Korea. Last confirmed: June 2026
How do you collect the M2-PK stool sample?
Some health checkup packages include the M2-PK stool test. The M2-PK stool test measures a marker that may be associated with changes in the digestive tract. It is a screening test and does not diagnose colorectal cancer on its own. KMI will interpret the result and advise whether any follow-up is needed.
According to the current KMI guide, the sample should be collected within two days of your appointment. Follow the document for the correct collection and storage method.
Please follow the instructions in the official guide carefully when using the kit.
Source: KMI Medical Check-up Center supplied to Bloom Korea. Last confirmed: June 2026
What should you do if you take medication?
Do not stop or change prescription medication on your own.
When you book, make sure you share details about your medications, supplements and relevant medical conditions before your appointment. Some patients may need individualized instructions about what to take, what to pause and when it can be restarted.
This is especially important if a medication affects bleeding, blood sugar or sedation. Bloom can help send your medication information to KMI, but the clinic’s medical team should provide the instructions.
Once your examinations are complete, read what to expect after your KMI health checkup, including recovery, results and symptoms that require attention.
A quick note from us
Bloom helps international clients arrange KMI health checkups and coordinate appointment details, preparation questions and communication with the clinic. The examination and personalized medical instructions come directly from KMI’s medical team.
If you’re unsure which guide applies to your package, contact us before your appointment. We can check directly with KMI so you don’t have to guess.