You do not have to strip completely naked for an endoscopy, but you will almost certainly change out of your street clothes into a hospital gown. How much you undress depends on which type of endoscopy you’re having, whether you’ll be sedated, and the specific protocols of the facility. The basics are straightforward, but the details vary enough that the question deserves a fuller answer than most pre-procedure instruction sheets provide.
Upper Endoscopy and Lower Endoscopy Require Different Things
The word “endoscopy” covers a range of procedures, and the clothing expectations shift depending on which end of the digestive tract the scope enters. For an upper endoscopy (also called an EGD, where a thin camera goes through your mouth and down into the esophagus, stomach, and upper small intestine), the primary concern is access to your upper body for monitoring equipment and IV placement. You’ll typically change into a hospital gown, but you can usually keep your underwear on. Your chest needs to be accessible for heart-monitoring pads, and your arm needs to be bare for a blood pressure cuff and IV line.
For a lower endoscopy, meaning a colonoscopy or flexible sigmoidoscopy, the scope enters through the rectum. You’ll change into a gown and remove your underwear. This is the procedure that generates most of the anxiety around undressing, and understandably so. The gown opens at the back, and the medical team positions you on your left side with your knees drawn up. You are draped with sheets, and only the area the scope needs to pass through is exposed at any given time. You are not lying uncovered on a table.
Why You Can’t Just Roll Up a Sleeve
If the scope goes in through the mouth or rectum, you might wonder why you can’t just keep your clothes on and let the team work around them. There are several practical reasons. Monitoring equipment needs direct skin contact: sticky electrode pads for heart rhythm, a pulse oximeter on your finger, a blood pressure cuff on your arm. An IV line is placed for sedation in most standard endoscopies. Street clothes with buttons, zippers, and belts get in the way of all of this, and in the rare event of a complication, the medical team needs fast, unobstructed access to your body.
There’s also a hygiene dimension. Endoscopy involves fluids, including the water and air pumped through the scope, and sometimes small amounts of blood or other body fluids. A study examining bacterial contamination of disposable gowns worn by endoscopy staff found that over half of gowns showed some contamination after procedures, though the bacteria detected were non-pathogenic.1PubMed Central. Micro-bacterial assessment of disposable gowns with a focus on green endoscopy in gastrointestinal endoscopy procedures: A Japanese pilot study for healthcare waste reduction If that’s what lands on the staff’s protective gear, you can see why the facility would rather you be in a disposable gown than your favorite pair of jeans. The gown is easier to manage if it gets soiled, and it eliminates the risk of your clothing interfering with equipment or becoming contaminated.
When You Might Stay in Your Street Clothes
There is one notable exception to the “change into a gown” rule: unsedated transnasal endoscopy. In this procedure, a very thin scope is passed through the nose and down into the esophagus, rather than through the mouth. Because the scope is so slim and the procedure is done without sedation, the experience is fundamentally different from a standard EGD. There is no IV line, no sedation monitoring, and no recovery period. Patients can often return to work or school the same day.2APFED. Sedation-Free Transnasal Endoscopy: A More Accessible Option for Evaluating Eosinophilic Esophagitis
Because the monitoring demands are so much lighter, many facilities allow patients undergoing transnasal endoscopy to remain in their regular clothing. You might be asked to remove a bulky sweater or scarf for comfort, but the full gown change is often unnecessary. If you’ve been told you’re having a transnasal endoscopy and you’re worried about undressing, it’s worth calling ahead to confirm whether a gown change is expected. The answer may well be no.
What About Jewelry, Glasses, Dentures, and Piercings
Beyond clothing, most endoscopy units will ask you to remove several other items. For an upper endoscopy, you’ll need to take out dentures, removable dental work, and tongue or lip piercings, because the scope passes through the mouth and any loose object in there is a choking or damage risk. Glasses usually come off because they can be dislodged during positioning, and because some sedation monitoring equipment sits near the face.
Jewelry removal is standard at many facilities, particularly rings, bracelets, necklaces, and watches. Part of the reason is that monitoring equipment (like a pulse oximeter) needs a bare finger, and part of it is general infection control. Some facilities are stricter than others. If you have a piercing that’s difficult or painful to remove, tell the team during your pre-procedure check-in rather than struggling with it in the changing room. They can often work around it or cover it.
Contact lenses can usually stay in for a standard endoscopy, though some facilities prefer you switch to glasses because sedation can dry out your eyes, and you won’t be able to blink normally. If you wear hearing aids, mention it, as the team needs to be sure you can hear their instructions during the procedure if you’re only lightly sedated.
Modesty Concerns Are a Real Barrier to Screening
The anxiety about undressing for an endoscopy, particularly a colonoscopy, is not trivial. Researchers studying why people avoid colonoscopy for colorectal cancer screening have found that modesty and embarrassment are among the most commonly cited deterrents. In a qualitative study of adults in Northern Malaysia, participants voiced fears like “Are they going to take off all of my clothes?” and expressed deep discomfort at the idea of being exposed in front of medical staff.3PubMed Central. Perceived Deterrence Towards Colonoscopy for Colorectal Cancer Screening among Northern Malaysia Population: A Qualitative Study That fear, based on a misunderstanding of how much exposure actually occurs, can lead people to skip a procedure that catches cancer early.
The reality is less exposed than most people imagine. During a colonoscopy, you’re lying on your side, draped in sheets, with the gown covering your front and upper body. Only a small opening at the back of the gown is used. The endoscopy team has done hundreds or thousands of these procedures and is focused on the monitor displaying the camera feed, not on your body. But knowing that intellectually doesn’t always override the emotional response, especially for people who have experienced trauma or who come from cultural backgrounds where bodily exposure in mixed company is deeply uncomfortable.
Garments Designed to Reduce Embarrassment
Some endoscopy centers have started experimenting with garments specifically designed to provide better coverage during colonoscopy. A study evaluating a novel patient gown found that participants, especially women and nonwhite patients, reported high satisfaction and reduced embarrassment when wearing the redesigned garment compared to a traditional hospital gown. Patients who had previously undergone colonoscopy with a standard gown preferred the newer design.4PubMed Central. Effect of a Novel Patient Garment on Perceived Privacy during Colonoscopy: A Simple Approach to Minimize Embarrassment
These garments typically work by providing a flap or opening that allows scope access without requiring the patient to feel that their entire backside is open to the room. It’s a relatively simple engineering change, but the psychological difference for the patient can be significant. If modesty is a major concern for you, it’s reasonable to ask the endoscopy unit beforehand whether they use any kind of modesty-preserving gown. Not all facilities do, but the ones that have adopted them report that patients respond positively.
Trauma-Informed Approaches to Endoscopy
For people with a history of physical or sexual trauma, the undressing and positioning involved in endoscopy can trigger intense anxiety or re-traumatization. This is an area that gastroenterology as a field has started to take more seriously. Trauma-informed strategies include screening all patients for trauma history, obtaining explicit consent before and during each step of the procedure, creating a safe physical environment, allowing extra time for privacy, and conducting a debrief after the procedure.5SpringerLink / Current Gastroenterology Reports. Providing Trauma Informed Care During Anorectal Evaluation
If you have a trauma history that makes the idea of changing into a gown and being examined while sedated feel overwhelming, you can and should tell the endoscopy team before the procedure day. Most units will work with you on specifics: having a same-gender team if that helps, explaining every step before it happens, allowing you to keep certain clothing on for as long as possible before the procedure starts, and making sure you have a chaperone or support person nearby. You don’t have to disclose the details of your trauma. Simply saying “I have a trauma history and need extra communication during the procedure” is enough for most teams to adjust their approach.
What to Wear to the Appointment
Since you’ll be changing into a gown anyway for most endoscopies, the best strategy is to wear comfortable, easy-to-remove clothing. Loose-fitting pants, a simple top, and slip-on shoes save time and frustration in the changing area. Avoid clothing with many buttons, belts, or complicated layers. You’ll be putting your belongings into a bag or locker, and something that’s easy to get back into afterward matters more than you’d think, because you’ll be groggy from sedation and your coordination won’t be at its best.
Leave valuable jewelry at home. Some facilities provide lockers, but many just give you a plastic bag for your belongings, and the last thing you want to worry about while under sedation is whether your watch is secure. Wear minimal makeup if you’re having an upper endoscopy, because the mouthguard and any oxygen cannula can smear it, and the pulse oximeter on your finger means nail polish (particularly dark colors) may need to come off at least one finger since it can interfere with the reading.
If you’re having a colonoscopy, consider wearing or bringing warm socks. Endoscopy suites tend to run cold, and your feet are the one body part that’s almost always allowed to stay covered throughout the procedure. Many patients say the cold room is more uncomfortable than the procedure itself, so socks and asking for a warm blanket can make a real difference in how the experience feels.
What Happens During the Gown Change
You won’t be undressing in an open room. Endoscopy facilities provide a private changing area, typically a curtained bay or a small room with a door. You’ll be given a gown and told which direction to wear it (usually open at the back for colonoscopy, open at the front for upper endoscopy depending on the facility). You’ll also get a bag for your clothes and personal items.
For an upper endoscopy, you typically remove everything above the waist plus your shoes, put on the gown, and keep your underwear and pants or shorts on underneath. For a colonoscopy, you remove everything below the waist including underwear, and many facilities will also have you remove your bra if you’re wearing one so that monitoring pads can be placed on the chest. Some facilities provide disposable shorts with a rear opening as an alternative to going bare under the gown for colonoscopy. If this option matters to you, ask about it when you schedule the procedure.
Once you’re in the gown, you’ll walk or be wheeled to the procedure room. From gown change to the start of the procedure, you’re covered. During the procedure itself, you’re under sedation (for standard endoscopy) and won’t be aware of your level of exposure. After the procedure, you stay in the gown in a recovery area until you’re alert enough to change back into your clothes. The entire experience of being in a gown typically lasts somewhere between one and two hours, including the waiting and recovery time.
Can You Request Specific Accommodations
Yes, and you should feel no hesitation about doing so. Common accommodations include requesting a same-gender endoscopist or nursing team, asking for extra draping, requesting that a support person stay with you until sedation begins, and asking for the lights to be dimmed once the procedure starts (the endoscopist works from the scope’s camera feed on a monitor, so overhead lighting is more for the patient’s benefit than the team’s). Some patients ask to keep a top or bra on during a colonoscopy, and depending on the facility’s monitoring setup, this is sometimes possible as long as electrode pads can be placed.
Facilities that serve diverse communities are generally accustomed to accommodating religious and cultural modesty requirements. If your faith or background involves specific expectations about bodily coverage or same-gender care, mention this when scheduling. Most endoscopy units can arrange gender-concordant care with enough notice, though same-day requests are harder to fulfill because staffing may not allow flexibility.
If you’ve had a previous endoscopy where the clothing situation was uncomfortable or distressing, use that experience as information. Tell the team what bothered you, be specific, and ask what they can do differently. Endoscopy staff are generally responsive to these requests because they know that a patient who feels respected and comfortable is more cooperative during the procedure and more likely to return for follow-up screenings.
Children and Endoscopy Clothing
If your child is scheduled for an endoscopy, the clothing protocol is similar in principle but different in emotional weight. Children are usually changed into a child-sized hospital gown, and depending on the child’s age, a parent or guardian may help with the change and stay with the child until sedation is administered. Pediatric endoscopy units are generally more attentive to comfort measures, including allowing children to keep a familiar item like a stuffed animal and using child-friendly language about what’s happening.
For very young children, the gown change itself can be a source of distress even before modesty enters the picture, simply because unfamiliar clothing in an unfamiliar place feels wrong. If your child has sensory sensitivities or a strong reaction to clothing changes, let the team know. Some units allow children to keep familiar underwear or socks on longer than standard protocol would dictate, removing them only at the last moment before the procedure begins. The goal is to minimize distress while maintaining the access the medical team needs.
Capsule Endoscopy Skips the Gown Entirely
One form of endoscopy involves no undressing at all. Capsule endoscopy uses a tiny camera inside a pill-sized capsule that you swallow. The capsule travels through your digestive tract over about eight hours, transmitting images to a recorder you wear on a belt around your waist. You stay in your regular clothes the entire time and go about your normal day (with some dietary restrictions).
Capsule endoscopy isn’t used for the same indications as standard upper or lower endoscopy. It’s primarily used to visualize the small intestine, which is hard to reach with a conventional scope. It can’t take biopsies, remove polyps, or treat anything it finds. But if your doctor has mentioned capsule endoscopy as an option and clothing anxiety is part of your concern, it’s worth knowing that this particular procedure involves no gown, no sedation, no IV, and no changing room.