What Is Site Feasibility in Clinical Trials?

Feasibility is the step where a sponsor decides whether your site is right for a specific study. Think of it as an audition. Every time you want to run a trial, you go through it, so getting good at feasibility is a big part of winning studies. It has two parts: a questionnaire on paper and a qualification visit in person.

What feasibility actually means

When a sponsor or CRO has a study to place, they don't pick sites at random. They run a feasibility assessment to work out which sites can realistically enroll the patients and run the protocol properly. It's their risk check. For you, it's the gate you pass through to get the study.

The feasibility questionnaire

For a given protocol, the sponsor sends a questionnaire. Underneath all the questions it's really asking two things: can you fill this study, and can you run it without cutting corners. Typical questions cover:

• How many patients you see with the target condition, and roughly how many would meet the eligibility criteria
• Whether you have competing trials that would pull from the same patient pool
• Your staff, your PI's background, your equipment, and lab access
• Your past enrollment performance, if you have any

Answer honestly and specifically. Sponsors can spot inflated patient numbers, and promising big then under-enrolling is how a site earns a bad reputation. Concrete and defensible beats optimistic every time.

The site qualification visit

If the questionnaire looks good, a monitor (a CRA) comes out, or does it remotely. This is the site qualification visit, sometimes called a pre-study visit. They tour your space, check your drug storage, look at how you keep records, and talk to your team to confirm you can actually do what the questionnaire claimed. Clear this and you move on to contracts and startup.

How to pass feasibility

• Know your numbers. Real, defensible counts for the condition, not a hopeful guess.
• Don't over-promise enrollment. Under-promising and then over-delivering is what builds the track record that wins your next study.
• Have your site profile ready. A tight summary of your patients, staff, equipment, and experience makes you look prepared. The how to become a clinical trial site guide covers building one.
• Move quickly. Sponsors work on timelines, and slow responses lose studies.

Feasibility is also your filter

It runs both ways. A study that doesn't fit your patients, or that would swamp your staff, is one to turn down. Saying yes to the wrong study and failing to enroll costs you more than a polite no ever would.

The bigger picture

Feasibility only happens once a sponsor is already talking to you. Getting into that conversation is the real bottleneck, which is covered in how research sites find and win studies. Once you're in it, feasibility is where you prove you can deliver.

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This is general information, not medical, legal, or regulatory advice. Feasibility requirements vary by study and sponsor.