Run a low-cost screening offer without a deposit and the schedule fills with appointments that do not happen. The pattern is predictable, because the patient's side of the deal is predictable: someone who clicked an ad and typed their name into a form has invested nothing. The appointment is a maybe wearing a time slot. When the day comes, the errand loses to whatever else the day contains.
For an imaging center this is worse than a marketing annoyance. A no-show does not just waste the acquisition cost of that lead; it burns a slot that was already paid for: the room, the tech, and the hour all ran anyway. The single biggest reason cheap-offer campaigns fail is not the offer and not the creative. It is no-shows.
The mechanism
A deposit is collected before the appointment slot is held. Usually $50, collected on the clinic's behalf, straight into the clinic's own account. Not a fee on top of the scan, simply money down against it. The moment a patient puts a card number behind a booking, the psychology of the appointment changes: it stops being a maybe and becomes a purchase they intend to use.
booked patients walk in when a deposit holds the slot. That is what the deposit buys.
The deposit also does quiet economic work. At a steady booking pace of 12 to 15 appointments a week, deposits alone put $2,600 to $3,250 a month into the clinic's account before a single patient pays for the scan itself, and before any upgrade happens. It is not the point of the model, but it is not nothing either.
What it actually does, measured
One clinic in Sugar Land, TX ran both versions at the same time over the same three weeks. One offer took a $25 deposit to hold the slot. The other was free. Everything else about them, the market, the audience, the follow-up, was identical.
The free offer booked 105 appointments and confirmed 17 of them. The paid offer booked 25 and confirmed 23. Sixteen percent against ninety-two.
Read that twice, because the first number is the trap. The free offer booked four times as many appointments and produced fewer confirmed patients. If you were watching bookings, it looked like the better campaign right up until nobody came.
A caveat we would rather state than have you find: the free calendar required staff to approve each request while the paid one confirmed automatically, so some of that gap is administrative rather than patients walking away. It is far too wide to be only that.
"Will a deposit not kill my bookings?"
It filters them, and the filter works in your favor. The person unwilling to put $50 behind a heart scan was overwhelmingly likely to be the person who either would not have shown or wanted the cheap scan and nothing more. Those bookings look like volume and cost like volume, but they were never going to become patients. What the deposit removes from your schedule is mostly the part of it that was fiction.
The patients who remain are the ones the entry offer exists for in the first place: people with enough intent to commit, walking into a building where someone is ready to have the upgrade conversation. That conversation, and how the entry offer should be priced under it, is covered in the calcium score pricing guide.
One thing a deposit cannot fix: an audience that could never afford the upgrade. If the wrong households are seeing the ad, the deposit just filters a bad pool into a smaller bad pool. That problem, and the targeting that solves it, is its own article.
We run the deposit for you as part of the whole system: a Conversion Specialist works every lead and collects the deposit before the slot is held, the ads reach households who can afford the upgrade, and Google search brings in the patients already looking. What you see is a schedule of people who actually walk in.