Booking an OBSP Mammogram in Ajax From Age 40
Learn how women aged 40 to 74 in Ajax can self-book an OBSP screening mammogram without a referral, what to bring, and how to prepare for the appointment.
· 9 min read

If you have recently turned 40, you may have heard that you can now book a screening mammogram on your own, without first getting a referral from your family doctor. That is true for routine screening through the Ontario Breast Screening Program (OBSP), and for many women it removes one of the small hurdles that tends to push a mammogram further down the to-do list.
This guide walks through how self-booking works, who it is meant for, when a referral is still the better route, and what the day of the appointment looks like at Rossland Diagnostic Clinic in Ajax. It is written for women who want a practical picture before they pick up the phone, whether this is a first screening or simply the first one booked without a doctor’s note.
What the OBSP is, in plain terms
The Ontario Breast Screening Program is the province’s organized breast screening program. Its purpose is to offer regular screening mammograms to people who do not have symptoms, so that changes in the breast can be looked at as early as possible.
Rossland Diagnostic Clinic is an OBSP-registered site. In practical terms, that means:
- Women aged 40 to 74 can book a routine screening mammogram with us directly.
- No doctor’s referral is needed for that routine screening.
- The examination itself is a standard digital mammogram, using low-dose X-ray to create images of the breast tissue.
The idea behind self-referral is simple: if you are in the eligible age range and you have no breast concerns, you should not need an extra appointment just to get permission to be screened.
Is self-booking right for you?
Self-booking is designed for routine screening, which means checking breasts that seem normal to you. Before you book, it is worth pausing on a few questions.
You are a good fit for self-booking if
- You are between 40 and 74 years old.
- You have not noticed any new changes in your breasts.
- You simply want to start, or continue, regular screening.
Talk to your doctor or health-care provider first if
- You have found a lump, thickening, or an area that feels different from the rest of the breast.
- You have nipple discharge, a change in nipple shape, or skin changes such as dimpling or redness.
- You have breast pain that is new, persistent, or in one specific spot.
- You have a personal history of breast cancer, or you are unsure whether your family history means you should be screened differently.
- You are under 40 or over 74 and wondering whether a mammogram makes sense for you.
Symptoms are not something to wait on, and they are not what a routine screening appointment is set up to address. A health-care provider can examine you and arrange the type of imaging that fits the situation, which may be a diagnostic mammogram, an ultrasound, or both. If you are not sure which category you fall into, a quick conversation with your provider is the safest way to decide.
How to book at our Ajax clinic
Booking a screening mammogram is straightforward. You can call the clinic at 905-426-3111 during business hours, or send a request through our appointment request page and we will be in touch to confirm a time.
When you call, it helps to have the following ready:
- Your Ontario health card.
- Your full name, date of birth, and a phone number where you can be reached.
- The name and contact information of your family doctor or nurse practitioner, if you have one.
- A note of when and where your last mammogram was done, if you have had one before.
That last point matters more than many people expect. Radiologists often find it useful to compare new images with earlier ones, because change over time can be as informative as a single picture. If your previous screening was somewhere else, mention it, and our team can let you know what information would be useful.
Choosing a time
The clinic is open Monday to Friday from 9:00am to 5:00pm and Saturday from 8:00am to 3:30pm. We are closed on Sundays. Saturday mornings are popular with women who work weekdays, so if that is your preference it is worth calling a little ahead.
Some women find mammograms more comfortable when their breasts are less tender. If you still have menstrual periods and notice tenderness in the week before your period, you might choose a date shortly after it instead. This is a comfort preference, not a requirement.
Preparing the day of your mammogram
Preparation for a screening mammogram is light, but a few details make a real difference to the quality of the images.
Skip deodorant and powder
On the day of your examination, please do not apply deodorant, antiperspirant, talcum powder, or similar products to your chest or underarms. Tiny particles in these products can show up on a mammogram and may look like something that needs a closer look. If you forget, let the technologist know; it is a common slip and easy to sort out.
Dress in two pieces
A two-piece outfit, such as a top with trousers or a skirt, means you only need to remove your top half. You will be given a gown to wear during the examination, and you can stay otherwise dressed.
Bring the essentials
- Your health card.
- A list of any breast surgeries, biopsies, or implants, with approximate dates.
- Reading glasses, if you will want to read any forms.
Let us know about anything relevant
Tell the technologist if you have breast implants, if you are pregnant or think you might be, or if you are breastfeeding. These do not automatically rule out a mammogram, but they can change how the examination is done or whether it should be postponed, and the decision is best made with full information.
What happens during the examination
Once you are checked in at our ground-floor clinic, you will change into a gown in a private area and then meet the technologist in the mammography room.
The technologist will position one breast at a time on the platform of the mammography unit. A clear plastic paddle then presses gently down to spread the tissue out. Compression is the part people tend to remember, and it is worth understanding why it is used:
- It holds the breast still, which reduces blurring.
- It spreads the tissue so overlapping structures are easier to see.
- It allows a lower radiation dose to produce a clear image.
Each compression lasts only a few seconds. Two views of each breast are usually taken, one from above and one from the side at an angle, although extra views are sometimes needed simply to capture all of the tissue.
If the pressure becomes uncomfortable, say so. Technologists work with patients’ comfort every day and can often adjust positioning. The whole visit, including changing, typically fits comfortably into a short appointment, though it is wise to leave a little extra time in your day.
After the appointment
Once the images are taken, you can get dressed and go about your day. There are no restrictions afterward.
The images are reviewed by a radiologist, a doctor who specializes in reading medical images. The report is then shared according to the usual process for screening results. If you have a family doctor or nurse practitioner, it helps to make sure we have their details so they are kept informed.
If you are asked to come back
Being called back for more imaging is a normal part of screening and does not, on its own, mean that something is wrong. Common reasons include:
- An area of overlapping tissue that needs a clearer view.
- A small finding that a radiologist wants to look at from a different angle.
- Tissue that is easier to assess with an ultrasound in addition to the mammogram.
Additional imaging is simply a way of getting a clearer answer. If you are called back, try to book promptly, and bring any questions to your health-care provider.
Making screening part of your routine
The value of screening comes largely from doing it regularly, so that small changes can be spotted against a known baseline. A few habits can help:
- Put it in your calendar. When you finish an appointment, ask when your next screening is recommended and set a reminder.
- Keep your history in one place. A simple note with dates and locations of past mammograms is useful for any clinic you visit.
- Know your normal. Being familiar with how your breasts usually look and feel makes it easier to notice a change between screenings.
- Do not wait for the next appointment if something changes. Screening is not a substitute for seeing your provider about a new symptom.
Your health-care provider can also help you think through how often you should be screened based on your age, your personal history, and your family history. The right interval is a medical decision, and it is worth having that conversation, especially as you move through your forties.
Getting here
Rossland Diagnostic Clinic is at Unit 102, 300 Rossland Road East, in Ajax. We see women from across Ajax, Pickering, Whitby and the wider Durham Region, and you can check our areas we serve page if you are coming from further afield. Free parking is available, and the clinic has ground-floor access, which makes the visit easier if you have mobility concerns or are bringing a stroller.
Many women combine a visit with other imaging their doctor has requested. If you also have a referral for an ultrasound or another examination, mention it when booking and we can let you know what is possible.
Key takeaways
- Women aged 40 to 74 can self-book a routine OBSP screening mammogram at our Ajax clinic without a referral.
- Self-booking is for breasts with no new symptoms; new changes should go to your health-care provider first.
- Skip deodorant, antiperspirant and powder on the day, and wear a two-piece outfit.
- Bring your health card and details of any previous mammograms or breast procedures.
- A callback for more images is a routine part of screening and is not a diagnosis.
To learn more about the examination itself, visit our mammography service page. When you are ready to book, call us at 905-426-3111 or request an appointment online, and our team will help you find a time that suits you.
