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Getting an ultrasound can feel uncertain, especially if it’s your first time or you’re unsure what to bring, how to prepare, or what actually happens during the scan. Many Ottawa patients arrive underprepared, which can delay results or even require a repeat appointment. The good news is that a little knowledge goes a long way. This guide walks you through every step, from booking your appointment to walking out with your imaging complete, based on how Ottawa clinics actually operate. Whether your scan is abdominal, pelvic, obstetric, or something else entirely, you’ll know exactly what to do.
| Point | Details |
|---|---|
| Doctor’s referral required | You cannot book an ultrasound in Ottawa without a formal physician’s requisition or referral. |
| Prep depends on scan type | Preparation specifics—like fasting or full bladder—vary by the kind of ultrasound you’re having. |
| Arrive early, bring documents | Always bring your requisition and health card and arrive 15 minutes before your appointment. |
| Be ready to adjust for special cases | Special instructions apply for diabetics or pregnant patients and during public health outbreaks. |
| Follow prep to avoid delays | Not following preparation steps can lead to inaccurate results or having your exam rescheduled. |
Before you can schedule your ultrasound in Ottawa, you need a few things in place. The most important is a physician’s requisition. As noted in the Ottawa ultrasound overview, appointments require a physician requisition or referral and must be pre-scheduled. Walk-in ultrasounds are not available at most Ottawa clinics, so make sure your doctor has provided you with a completed referral form before you reach out to book.
You also need to bring your valid Ontario Health Insurance Plan (OHIP) card. Without it, your appointment may be delayed or you may face out-of-pocket charges. Keep both your OHIP card and your requisition form together so you don’t forget either one on the day of your scan.
Where can you book your ultrasound in Ottawa?
You have two main options: public hospitals or private diagnostic clinics.
| Option | Wait time | Booking method | Cost |
|---|---|---|---|
| Public hospital | Longer (weeks to months) | Fax referral or phone | Covered by OHIP |
| Private clinic (e.g., CDNcare) | Shorter (days to a week) | Online, phone, or fax | Covered by OHIP |
Private clinics tend to have more flexible scheduling and faster availability. You can book through the online portal at CDNcare, which is often the fastest way to secure an appointment.
What to bring to your ultrasound appointment:
Plan to arrive at least 15 minutes before your scheduled time. This gives you space to check in, complete any paperwork, and settle in without feeling rushed.
Pro Tip: Private clinics often have faster availability via online booking. If your scan is time-sensitive, check CDNcare’s online portal first before calling a hospital.
Next, understanding the booking requirements makes preparing for your specific type of ultrasound much easier.
With your appointment set and documents ready, let’s clarify exactly how to prepare on the day before and the day of your ultrasound. Preparation varies significantly depending on the type of scan you’re having, and getting it wrong can mean your images are unclear and your appointment needs to be rescheduled.

As outlined in ultrasound prep guidance, preparation varies by type: fasting for abdominal, a full bladder for pelvic and obstetric scans, and no preparation needed for others.
Preparation by ultrasound type:
| Ultrasound type | Preparation required |
|---|---|
| Abdominal | Fast for 8 hours (no food, drink, or smoking) |
| Pelvic | Drink 1 liter of water 1 hour before; do not empty your bladder |
| Obstetric (pregnancy) | Drink 1 liter of water 1 hour before; do not empty your bladder |
| Breast, thyroid, scrotum, MSK, vascular | No preparation needed |
For pregnancy ultrasound prep advice, the full bladder requirement is especially important in early pregnancy, as it helps the sonographer get a clearer image of the uterus. Later in pregnancy, preparation instructions may change, so always confirm with your clinic. You can also review what to expect for pregnancy ultrasound appointments to feel more confident going in.
Top 3 preparation mistakes to avoid:
For abdominal ultrasound expectations, knowing that fasting is non-negotiable helps you plan your day accordingly.

Pro Tip: Proper preparation is essential. Noncompliance with prep instructions is one of the most common reasons ultrasounds get rescheduled. Set a reminder the night before and re-read your instructions that morning.
Now that you’re fully prepared, let’s walk through exactly what to expect when you arrive at your Ottawa clinic for your ultrasound.
Step-by-step breakdown of your appointment:
As confirmed in the ultrasound procedure overview, patients lie on a table, gel is applied, and a transducer is moved across the skin during the procedure.
Most ultrasound appointments last between 15 minutes and 1 hour, depending on the complexity of the scan and the area being examined. Plan your day with some buffer time after your appointment.
After your scan, the images are reviewed by a radiologist (a doctor who specializes in reading medical images). Results are typically sent to your referring physician within 24 to 48 hours at CDNcare. If you have questions after your appointment, contact your clinic directly.
What to keep in mind after your scan:
Even with good preparation, unique situations arise. Here’s how Ottawa clinics recommend handling them.
Some patients have medical conditions that affect how they should prepare. Special prep for diabetics and pregnant patients is addressed directly by Ottawa clinics: diabetics who require fasting may be permitted to have a light meal before their scan, but you must confirm this with your doctor and clinic beforehand. Never assume it’s acceptable without checking.
Pregnant patients should follow specific instructions for obstetric ultrasounds. If you’re unsure about pregnancy ultrasound preparation, or wondering about first pregnancy ultrasound timing, CDNcare has dedicated resources to guide you.
COVID-related protocols remain a consideration at Ottawa clinics. During active outbreaks, mask policies and symptom screening may be enforced. Always check your clinic’s current requirements before your appointment, especially if you or someone in your household has recently been unwell.
Top 3 reasons ultrasounds get rescheduled (and how to avoid them):
Ottawa clinics report high success rates for ultrasound imaging when patients follow detailed prep instructions provided at the time of booking. Compliance with preparation guidelines is directly linked to image quality and diagnostic accuracy.
Pro Tip: Always clarify your instructions with your clinic when you book. Bring a written list of your current medications to your appointment, as the sonographer or radiologist may need to review them.
Most general guides tell you to fast or drink water. What they don’t tell you is how much the Ottawa-specific split between public and private imaging affects your experience.
Public hospital referrals can involve wait times that stretch from weeks to months, depending on the urgency of your case. Private clinics like CDNcare offer faster online scheduling and often have appointments available within days. For many Ottawa patients, choosing a private clinic isn’t just about convenience. It’s about getting answers faster when time matters.
What we’ve also seen is that patients underestimate the role of simple preparation steps. A full bladder or a proper fast isn’t just a suggestion. Every clinic enforces compliance because image quality directly depends on it. A scan done on an unprepared patient often produces inconclusive results, which means starting over.
Our honest advice: don’t treat prep instructions as optional. Double-check both the general guidelines and any location-specific protocols your clinic provides, because these can change quickly. A two-minute phone call before your appointment can save you a repeat visit.
You now have a clear picture of what to expect before, during, and after your ultrasound in Ottawa. The next step is simple: book your appointment at a clinic you can trust. CDNcare offers Ottawa ultrasound services across more than 20 locations, with online and phone booking options that make scheduling straightforward. If you need imaging quickly, explore urgent care imaging in Ottawa for faster access. You can also visit the Charlotte Imaging location if it’s convenient for you. Bring your requisition, follow your prep instructions, and arrive ready. Our team is here to make your experience as smooth and stress-free as possible.
No. A physician’s requisition or referral is required at all Ottawa clinics, and appointments must be pre-scheduled in advance.
Lack of preparation can result in poor image quality, and noncompliance can lead to rescheduling your exam at a later date.
Most scans take between 15 minutes and 1 hour. The duration varies depending on the type of scan and the area being examined.
Yes. Fasting diabetics may eat a light meal before their scan, but you should always confirm this with your doctor and the clinic before your appointment.
Masking and symptom screening may be required during outbreaks. COVID rules may apply at any time, so check your clinic’s current policies before you arrive.
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