What was the specific reason the article's author chose an upper GI series (barium swallow) instead of a gastroscopy?

The author chose an upper GI series because they had no digestive symptoms or family history, and wished to avoid anesthesia or invasive procedures. The upper GI series involved consuming a contrast agent and moving on an X-ray table for imaging.

When should GLP-1 receptor agonists (e.g., Wegovy, Mounjaro) and antiplatelet/anticoagulant medications (e.g., aspirin) be stopped before a health check-up for individuals in their 30s?

It is recommended to stop GLP-1 receptor agonists 2 weeks before the check-up. For antiplatelet/anticoagulant medications, you should consult with your prescribing medical professional at least 1 week before the check-up to discuss whether to stop them. All medication discontinuation should only be done after consulting with your prescribing medical professional, not arbitrarily.

How long did the author's health check-up take in total, and what was the examination process like?

The author's health check-up took a total of 1 to 1.5 hours, with almost no waiting time. The hospital operated in a 'factory-style' manner where patients moved between examination rooms, allowing for efficient examinations in each department.

What unexpected symptoms did the article's author experience after the upper GI series?

Immediately after the upper GI series, the author experienced unexpected symptoms of diarrhea and white stools due to the contrast agent. This is explained as a side effect of consuming the contrast agent.

Seoul Health Check-up 2026: A 30s Guide to Prep & Scans

I recently underwent a comprehensive health check-up as I approached my 30s. Before I went, I found myself wondering about things like how long it would take, what to fast, and other essential precautions. So, I decided to put together this guide based on my experience, including some tips no one told me beforehand!

You can choose your hospital, but I intentionally picked a large one to avoid any hassle during the examination process. Think of it as a highly efficient 'health check-up factory'!

- Health Check-up Items

- Pre-Check-up Precautions & Preparation

- Health Check-up Duration

- My Health Check-up Review

Health Check-up Items

First, consider how extensive you want your check-up to be and what your budget is. I personally felt that focusing solely on blood tests wasn't enough, as I could monitor those largely on my own. My goal was to get a thorough ultrasound examination, so I selected my items accordingly.

I chose a standard set of tests, added a few optional items, and then specifically paid extra for a uterine ultrasound.

My Health Check-up Items

For this check-up, I opted for the basic screening, plus a gastrointestinal contrast study, and thyroid and uterine ultrasounds.

Basic Examination

Height, Weight, BMI, Waist Circumference

Blood Pressure

Vision Test

Hearing Test

Dental Examination

Doctor's Consultation & Counseling

Blood Test

Complete Blood Count (CBC)

Liver Function: AST, ALT, γ-GTP, ALP, Bilirubin, etc.

Kidney Function: BUN, Creatinine, GFR, etc.

Blood Sugar: Fasting Blood Glucose, Glycated Hemoglobin (HbA1c)

Cholesterol: Total Cholesterol, Triglycerides, HDL, LDL

Protein, Albumin

Iron, Calcium, Phosphorus

Uric Acid

Amylase

Rheumatoid Factor (RF)

Infection & Tumor Markers

Hepatitis B Antigen/Antibody

Syphilis Test (RPR)

CEA

CA19-9

AFP

Urine Test

Urine Test 10 Items

-

Cervical Cytology (PAP)

Imaging & Other Tests

Chest X-ray

Electrocardiogram (ECG)

Mammography

Upper Abdominal Ultrasound

Gastrointestinal Contrast Study (Optional Item: choice between endoscopy and contrast)

Thyroid Ultrasound (Optional Item)

Uterine Ultrasound (Pelvic Ultrasound) (Additional Paid Item)

I had the choice between a gastroscopy (endoscopy) and a gastrointestinal contrast study. Since I have no digestive symptoms, no family history of related issues, and preferred to avoid anesthesia and invasive procedures if possible, I went with the contrast study.

I'd wanted a thyroid ultrasound for a while (given my job involves a lot of radiation exposure, poor me!), so I made sure to include it.

The uterine ultrasound was also something I felt I wanted, so I paid extra for it. Combining both ultrasounds into a single, comprehensive package would have been too expensive, so adding them individually turned out to be more affordable.

However, I was a little disappointed that the uterine ultrasound was an abdominal scan (over the belly) rather than a transvaginal ultrasound, which uses an internal probe. Anyway, these were the items I chose for my check-up.

The health check-up didn't include dental, so I went to a dentist separately for a basic check-up, scaling, and X-rays. As a health check-up recipient, most of it was covered by insurance, so it cost me less than ~$35.

My results will be back in two weeks, but before I even get them, I wanted to share the essential pre-check-up information – like fasting and precautions – that was so hard to find when I was looking.

Pre-Health Check-up Precautions

Fasting Time, Medication, & Sedated Endoscopy: Key Info

Before your health check-up, you need to confirm not only your fasting time but also precautions related to any medications you're taking and the type of examination you'll undergo.

2 Weeks Before

GLP-1 receptor agonist medications such as Wegovy, Mounjaro, or Ozempic

These can slow gastric emptying, potentially leaving food residue during endoscopy.

Recommended to stop 2 weeks before the examination.

※ Do not stop medication arbitrarily; consult your prescribing physician first.

1 Week Before

Antiplatelet/anticoagulant medications such as Aspirin, Plavix, Warfarin, or Xarelto

These carry a risk of bleeding if a biopsy or polyp removal is performed during endoscopy. You must discuss discontinuation with your prescribing physician in advance.

The Day Before

Fast for at least 8 hours.

On the Day of the Examination

For Women's Examinations

After Sedated Endoscopy

The effects of sedatives may linger, so avoid driving, exercising, operating machinery, or making important decisions on the day of the exam. Rest sufficiently.

Key Takeaways

2 weeks prior: Check GLP-1 medications

→ 1 week prior: Check anticoagulants/antiplatelets

→ Day before: Begin fasting

→ Day of: Confirm fasting and medication intake

→ After sedated endoscopy: No driving

※ Guidelines may vary depending on the medical institution, your medications, and the type of examination. Always prioritize the instructions from your specific check-up center.

My 30s Health Check-up Review:

The flow felt a bit chaotic initially, as I had to navigate to each examination room myself.

There were also many international visitors. Even I felt a bit disoriented at first, so I imagine it could be even more surprising for someone unfamiliar with the system. Still, everyone seemed to manage well.

Hospitals in Korea are excellent, and the cost of medical care and health check-ups is relatively affordable, which seems to attract many international visitors. Instead of just going to Gangnam for cosmetic procedures, I think more international visitors should consider these kinds of health screenings!

It's so convenient! If you're coming from the US, you should definitely consider combining it with some medical tourism!

The process involved registration, payment, confirming check-up items, changing into a gown, proceeding with tests, and then a final check-out at the reception before heading home. It felt like a well-oiled machine, with each department specializing in just one test. Everything moved smoothly and efficiently, which I really appreciated.

It only took about an hour to an hour and a half, and there was virtually no waiting time.

Since you'll be changing in and out of a gown, I recommend wearing comfortable clothes that are easy to put on and take off.

I expected them to start with blood pressure, but it seemed like everyone had a different sequence of tests. I guess they rotate people to available rooms to keep things efficient, almost like a carousel system?

The doctor's consultation was super quick, less than a minute. Some staff members were friendly, but one even sent me to the wrong exam room. A little more attention to detail would be nice!

It's best to remove necklaces and earrings. If you have piercings that are hard to take out, you might be able to keep them in for some scans, but it's generally better to remove them if possible.

I chose the contrast study instead of a gastroscopy. It involved drinking a contrast agent and then lying on a movable X-ray table, shifting around for various shots. Honestly, it was a bit fun!

They warned that the contrast agent could be nauseating, but it wasn't bad at all. It just tasted like a thin soy milk.

After drinking the agent that creates gas in your stomach, I had to roll twice to the right while they took the images.

I was lying there, and the X-ray table moved around like a theme park ride! They told me not to burp.

Coming out, I saw people lined up for endoscopies, and I was so happy my part was over quickly!

But on the way out, I experienced something totally unexpected...

Why did no one tell me the contrast agent would make me need to use the restroom immediately?!

???

I felt like I might have to rush to the bathroom the entire ride home! And yes, expect white stools afterward – a common but rarely mentioned side effect!

My results are due in two weeks. I'm a little nervous!

If everything checks out, I'm off to Hong Kong for a trip...