What to Do Before a Cystoscopy: Preparation Steps

Preparing for a cystoscopy is usually simpler than most people expect. For a standard diagnostic flexible cystoscopy, the kind done in a clinic or office, there is typically no fasting required, no general anesthesia, and no need for someone to drive you home. The procedure itself is brief, and preparation mostly involves knowing which medications to adjust, understanding what will happen with numbing gel, and being aware of a few things that can make the experience smoother. That said, the prep does get more involved for certain patients and more complex versions of the procedure, and knowing the difference matters.

Why Preparation Is Usually Minimal

Most cystoscopies performed today use a flexible scope, which is thinner and more maneuverable than the older rigid instruments. Flexible cystoscopy can be done with minimal or no anesthesia, and the positioning and pre-procedure preparation are simpler than what rigid scopes require.¹ For a straightforward diagnostic look inside the bladder, you will typically be awake, lying on an exam table, and the whole thing takes somewhere between five and fifteen minutes.

The practical upshot is that for many patients, “preparation” amounts to a few conversations with the urologist’s office about medications and a heads-up about what the day will look like. If your procedure involves something beyond a simple look, such as removing a tumor, taking biopsies, or placing a stent, the prep escalates accordingly and may involve fasting, sedation or general anesthesia, and more extensive pre-operative testing. Your urologist will tell you which category you fall into, but the default for a diagnostic cystoscopy is low-key.

Medication Adjustments

The single most important prep conversation for many patients involves blood-thinning medications. If you take warfarin, a newer oral anticoagulant like apixaban or rivarelbaan, or antiplatelet drugs like clopidogrel, you need clear instructions from your urologist about whether and when to stop them. The challenge is that stopping these drugs raises the risk of a blood clot, while continuing them raises the risk of bleeding during or after the procedure. Guidelines exist to help urologists balance these risks, but the evidence is not always clear-cut, and protocols can vary between institutions.²

For a diagnostic flexible cystoscopy without biopsies, many urologists will let you continue blood thinners because the bleeding risk from just looking around is low. If biopsies or other interventions are planned, stopping the medication a few days beforehand is more common. Do not make this decision on your own. Call your urologist’s office and, if relevant, your cardiologist or prescribing doctor to coordinate. The timing for stopping each drug differs, and some patients on blood thinners need a bridging strategy with injectable anticoagulants in the gap.

Beyond blood thinners, there are generally no other medications you need to stop. You can take your regular prescriptions with a sip of water as usual. If you are on antibiotics for an active urinary tract infection, most urologists will want to treat the infection first and reschedule the cystoscopy for after you have finished the course.

Do You Need Antibiotics or a Urine Test Beforehand?

This is an area where practice has shifted in recent years. It used to be routine for clinics to collect a urine culture before every cystoscopy and prescribe preventive antibiotics. The thinking was straightforward: putting a scope through the urethra introduces bacteria, so kill the bacteria first. But the evidence now points in a different direction.

In a study of over 2,000 cystoscopies, about a quarter of patients had bacteria in their urine without any symptoms. Despite that, fewer than 2% developed a urinary tract infection with fever within 30 days of the procedure, and every single infection resolved quickly with oral antibiotics. No one was hospitalized for sepsis.³ More recent work has confirmed that having bacteria in the urine without symptoms before a cystoscopy does not predict who will get an infection afterward, leading researchers to conclude that routine urine culture before outpatient cystoscopy is unnecessary.⁴

The concern with routine pre-procedure cultures is not just that they are unnecessary. They actively cause problems. When bacteria show up in a culture from someone who feels fine, clinics sometimes cancel the cystoscopy or prescribe unnecessary antibiotics, both of which are wasteful and contribute to antibiotic resistance.⁵ If your clinic still requires a urine sample beforehand, that is fine and within normal practice. But if you are told your cystoscopy needs to be postponed because of bacteria in your urine despite having zero symptoms, it is worth asking your urologist whether that is genuinely necessary.

The exception is patients who have active urinary symptoms: burning, urgency, fever, or cloudy and foul-smelling urine. If you have an active infection, the procedure should generally wait until after treatment. This is not controversial.

What Happens With Numbing and Pain Control

For a flexible cystoscopy, the standard approach is a lubricating gel squeezed into the urethra a few minutes before the scope goes in. In many clinics, this gel contains 2% lidocaine, a local anesthetic. The gel serves two purposes: it makes it easier for the scope to slide through, and in theory it numbs the urethra.

Whether the lidocaine actually helps with pain is surprisingly debatable. A randomized trial comparing lidocaine gel to plain lubricating gel in men found no meaningful difference in pain scores between the two groups.⁶ The lubrication itself seems to be doing most of the work, and the anesthetic adds little on top. When lidocaine gel is used, it is typically instilled about five minutes before the procedure begins to give it time to take effect.⁷

What this means for you in practical terms is that you should not expect to feel nothing. Most patients describe the sensation as uncomfortable and strange rather than acutely painful, more of a pressure and urgency feeling than a sharp pain. If you have had a catheter placed before, the sensation is somewhat similar. The discomfort is brief and usually fades quickly once the scope is in the bladder, where there is more room.

For rigid cystoscopy or procedures involving biopsies or tumor removal, the anesthesia situation changes. These often involve sedation, spinal anesthesia, or general anesthesia, and the prep for those is closer to any surgical procedure: fasting beforehand, an IV line, a recovery period, and someone to drive you home.

Strategies That Actually Reduce Anxiety and Discomfort

The anxiety that comes with knowing someone is about to put a scope into your bladder is real and well-documented. It is also worth addressing, because anxiety makes the experience worse. Tense muscles in the pelvic floor make scope insertion harder and more painful, and the psychological distress of anticipation can be worse than the procedure itself.

Research has tested several simple distraction techniques during cystoscopy, including watching a video, listening to music, and squeezing a stress ball. All three reduced anxiety compared to doing nothing, with video being the most effective.⁸ Even simpler, having someone hold your hand during the procedure has been shown to significantly reduce anxiety, pain, heart rate, and blood pressure, and made patients more willing to come back for a repeat procedure.⁹

If your clinic allows it, bringing a partner or friend to hold your hand is one of the easiest and most effective things you can do. Asking if you can listen to music through earbuds or watch something on your phone during the procedure is also reasonable. Some clinics have screens mounted where you can watch the camera feed, which sounds counterintuitive but gives many patients a sense of control and something to focus on other than the sensation. Do not hesitate to ask what options are available. Urologists perform these procedures constantly and understand that patient comfort makes everything go more smoothly.

Breathing exercises can also help. Slow, deep breaths relax the pelvic floor muscles and give you something to concentrate on. If you tend toward medical anxiety, practicing a breathing pattern beforehand, such as inhaling for four counts and exhaling for six, gives you a tool to use in the moment.

Hygiene Before the Procedure

You do not need to do anything exotic. A normal shower or bath on the day of the procedure is sufficient. The clinical team will handle the sterile skin preparation in the procedure room. In studies of male patients undergoing cystoscopy, antiseptic cleaning of the perineal area before the procedure significantly reduced bacterial counts on the skin, dropping the rate of positive cultures from about 38% before cleaning to roughly 6% afterward.¹⁰ Adding a second antiseptic agent reduced bacterial regrowth even further during the procedure.¹¹

The point is that the sterile prep done in the clinic is doing the heavy lifting. You are not expected to scrub yourself with surgical solutions at home. Just show up clean. If you have any skin infections, rashes, or open sores in the genital area, mention them to your urologist ahead of time, as they may want to postpone the procedure.

Eating, Drinking, and Bladder Fullness

For a standard flexible cystoscopy with local anesthetic gel only, you can eat and drink normally beforehand. There is no fasting requirement. Some clinics suggest drinking a glass or two of water beforehand so that your bladder has some urine in it, which makes it easier for the urologist to see the bladder walls when the scope is inside. That said, you do not need to arrive with a painfully full bladder. A moderate amount is enough.

If your procedure involves sedation or general anesthesia, the rules change. You will typically be told to stop eating solid food at least six to eight hours before and stop clear liquids two hours before. Your clinic will give you specific fasting instructions, and following them exactly matters because food in the stomach during anesthesia creates a risk of aspiration.

What to Wear and Bring

Wear comfortable, loose-fitting clothing. You will need to undress from the waist down, so something easy to take off and put back on is ideal. Bring your insurance card, a list of your medications, and any paperwork the clinic sent you. If you are having sedation, arrange a ride home in advance.

One underappreciated tip: bring a pad or liner. After the procedure, the lubricating gel and some urine will leak out, and having protection saves you from an uncomfortable ride home. Many clinics provide a pad, but not all, and having your own is a simple backup.

If You Have a Pacemaker or Implanted Cardiac Device

This is a niche situation, but if it applies to you, it is critical. Cystoscopy procedures that involve electrocautery, which is common during biopsies or tumor removal, can interfere with implanted cardiac devices like pacemakers and defibrillators. The electrical current from the cautery equipment can be sensed by the device and trigger inappropriate responses, including pacing disruptions or unnecessary shocks.

The standard approach is to have the device evaluated before and after the procedure, and to reprogram it beforehand: pacemakers are typically set to an asynchronous mode, while implantable defibrillators have their arrhythmia detection suspended during the operation.¹² Proper grounding of all electrical equipment and keeping the cautery circuit away from the device are additional safety measures.¹³

In some cases where the patient cannot tolerate having their device turned off even briefly, urologists can use bipolar energy sources instead of standard monopolar cautery. A bipolar setup confines the electrical current between two closely spaced electrodes at the tip of the instrument rather than running it through the patient’s body, which avoids interfering with the implanted device.¹⁴

If you have any implanted electrical device, tell your urologist well in advance. The coordination between your cardiologist and the urology team needs to happen before the day of the procedure, not in the prep room. This also applies to cochlear implants, deep brain stimulators, and spinal cord stimulators.

When Anatomy Makes Things More Complicated

Most cystoscopies are straightforward, but certain anatomical conditions can change the preparation. Urethral stricture disease, where scar tissue narrows the urethra, is one of the more common complicating factors. If the narrowing is at the tip of the urethra or in the front part of the passage, a standard adult flexible cystoscope may not fit through. In these cases, the urologist may need to measure the urethral opening first using calibration tools or switch to a smaller pediatric cystoscope.¹⁵

If you have a known stricture, a history of urethral surgery, or have been told in the past that catheterization was difficult, bring that up with your urologist during the scheduling conversation. It will not necessarily change your personal preparation, but it helps the clinical team have the right equipment ready and set realistic expectations for the procedure. In rare cases, a stricture may mean the cystoscopy needs to be done under sedation or general anesthesia rather than with local gel alone, which then triggers the more involved prep protocol including fasting.

Men with significantly enlarged prostates can also experience a more uncomfortable cystoscopy, because the scope has to navigate through a longer and more constricted prostatic urethra. This does not usually change the pre-procedure preparation, but being aware of it helps set expectations about what the experience will feel like.

After the Procedure and What to Watch For

Preparation is partly about knowing what comes next, so you can plan your day appropriately. After a flexible cystoscopy, most people leave the clinic within minutes and can drive themselves home (assuming no sedation). Mild burning with urination is common for a day or two, as is a small amount of blood in the urine. Drinking extra water for the first 24 hours helps flush the bladder and reduces the burning sensation.

You should contact your urologist if you develop a fever, cannot urinate at all, see heavy bleeding or blood clots in the urine, or have burning that worsens rather than improves after the first couple of days. As noted earlier, the actual rate of infection requiring treatment after a diagnostic cystoscopy is low, under 2%, and the infections that do occur tend to resolve quickly with oral antibiotics.³ Knowing this can be reassuring, but it does not mean you should ignore symptoms. A fever after any urological procedure warrants a call to your doctor.

Most clinics will give you discharge instructions covering these points, but it helps to have someone at home who knows what to watch for, especially if the procedure involved biopsies or if you are on blood thinners. Plan for a quiet day afterward. You likely will not need it, but having the option to rest is better than discovering you needed it while sitting in traffic.