Colonoscopy FAQs

  • Font Size
  • A 
  • A 
  • A
General FAQs
  • Q1 :

    Who is a candidate for colon screening?

    1. Anyone who is over 50 years old. It should be repeated every 10 years, or by physician recommendation. (Picture 1 on Colonoscopy Procedure Page)
    2. Individuals with a family history of colorectal cancer, or other risk factors.
  • Q2 :

    What risk factors are associated with Colorectal Cancer (CRC)?

  • The exact cause of CRC is not known; however, studies show a relationship between increased socio-economic development and diet (excess of saturated animal fat) with an increased incidence of CRC.  Other factors include:
    • Increasing age (over 60 years old)
    • Other diseases of the digestive tract, including ulcerative colitis or Crohn’s Disease
    • Type 2 diabetes
    • Family history of CRC or other types of cancers
    • Diet (meat consumption) & lifestyle (smoking & alcohol consumption; physical inactivity)
  • Q3 :

    Why should I undergo colon screening? What are the benefits?

  • Statistics from the National Cancer Institution state that colorectal cancer is one of the top 3 types of cancers registered in Thailand, both in men and women.

    Colon screening allows your physician to locate any polyps or abnormal tissues that are present. Once identified, these can usually be removed immediately and biopsied if necessary.

  • Q4 :

    If I don’t want to do a colonoscopy, what other procedures are available?

  • Colonoscopy is the only procedure that screens the entire colon and allows your doctor to immediately remove any polyps or abnormal tissues that may be present. However, other screening options include:
    • Stool exams (Fecal occult blood test): should be done annually. However, if blood is found in the stool, a colonoscopy may still be needed to look for the source.
    • Virtual colonoscopy (CT Colonography): is another colon screening option. However, if a polyp or abnormal tissue is found, you may still need to have a colonoscopy to remove/biopsy it.
    • Sigmoidoscopy is an option to screen the Sigmoid only. However, this procedure does not screen entire colon.
  • Q5 :

    When is an anesthesiologist needed?

  • For patients who over 60 years old, have an underlying disease, or are obese, the supervision of an anesthesiologist may be required for patient safety purposes. Your GI doctor will make the final decision on  whether you need an anesthesiologist or not during the pre-procedure physical examination.

    The anesthesiologist will work with your GI doctor during sedation for monitoring your respiratory system and maintaining your blood pressure.  For your safety, please be sure to tell your GI doctor in advance of any health conditions you have and any medications that you are taking.

    Approximately 10% of patients at Bumrungrad require the procedure to be performed under an anesthesiologist. The additional costs for both the anesthesiologist fee and the fee for medications are approximately 5,000 baht.

    In most cases, the GI physician is able to inform the patient if an anesthesiologist is required before the procedure is performed. However, on some occasions an anesthesiologist is required after the procedure has already started. This decision is up to the GI doctor.



  • Q6 :

    What is the possibility for me to need a polypectomy or biopsy during colonoscopy or gastroscopy?

  • From our 2010 statistics, we found that about 46% of the procedures done in Bumrungrad also needed a polypectomy or biopsy. Of these, 3.5% of the polyp/tissue was cancerous. However, this statistic includes patients who come with existing symptoms and repeat procedures.

  • Q7 :

    If I need to have a polypectomy or biopsy, what are the additional costs?

  • The added cost comes from the additional equipment required to perform polypectomy/biopsy, pathology lab fees, and the doctor’s fee. The estimated price for polypectomy is about 10,000-15,000 baht, and 1,000-2,500 baht for each biopsy that is sent to the lab. The total price of the procedure will depend on the size and number of polyps. 

  • Q8 :

    Can I complete a Check-up screening package and perform the GI screening on the same day?

  • Yes, you can; however, it is not recommended to do both on the same day. To complete both, you would need to fast for almost 20 hours. Check-up packages require patients to fast for 9 hours before blood tests and the abdominal ultrasound. Then, you would need to continue fasting throughout the check-up process, followed by approximately 5-6 hours of fasting during the GI screening procedure before eating or drinking anything.

  • Q9 :

    If I am taking a blood thinning or anti-coagulant medication, why can I not undergo a GI screening procedure immediately? If it was during my check-up that my physician recommended that I have a GI screening procedure, can I meet the GI doctor the same da

  • If you are regularly taking anticoagulant medications, there is an increased risk of excessive bleeding during a GI screening procedure. Therefore, you would need to temporarily stop taking anticoagulant medications for at least 7 days prior to the procedure. However, you must first confirm with your physician that you are safe to do so. You can have a pre-procedure physical examination on the same day as your check-up and then make an appointment for your scope when you’re ready.

  • Q10 :

    Is there any possibility of having the GI screening done before my check-up package to save time?

  • From our experience, patients are unable to complete the check-up process after GI screening due to the affects of sedatives required during the procedure.


  • Q11 :

    What sets us apart from other hospitals?

    • We use only the latest technology
    • We boast a brand new facility with a private preparation area
    • Our GI specialists have extensive experience in the screening, diagnosing and treatment of GI conditions.
  • Q12 :

    At what time should the patient arrive at the Digestive Disease Center if they would like to complete both the consultation and the GI screening procedure on the same day?

  • Patients should be able to complete both as long as their appointment with the GI doctor is before 2 pm and they begin the bowel preparation process before 3 pm.

  • Q13 :

    When will I get the result of the procedure?

  • The result of the CLO test and endoscopy report will be provided on the same day. It will take about 3 days for a pathology report, if needed. The physician will make another appointment or call you for reporting the result.

  • Q14 :

    Will I need to stay in the hospital?

  • The procedure can be done in one day on an outpatient basis. It will take about 2-3 hours for preparing your bowel, 30-60 minutes for performing the procedure, and 2 hours for resting in the recovery area. We recommend you to arrange someone to pick you up after the procedure. Patients should not drive for at least 12 - 24 hours after the colonoscopy due to affects from the sedatives.

  • Q15 :

    Will it hurt?

  • No. During a colonoscopy, patients will receive a sedative through their vein to help keep them relaxed. After the colonoscopy, patients will be taken care of in a recovery room for about two hours. Cramping or bloating may occur during the first hour after the procedure because of some pumped-in air left in the abdomen. Patients will feel better after flatulating. This symptom will disappear within 24 hours. 

  • Q16 :

    If I need to do biopsy or polypectomy, can I apply for the package?

  • Yes. The biopsy, polypectomy, or other procedures performed during the scope will be added to your bill separately.