Is CiviCRM right for managing volunteers on clinical trials
I am afraid the information you are giving is far too limited to give a true answer if CiviCRM is right.

At the same time I am fairly convinced CiviCRM in combination with probably a Drupal website would support the kind of thing you are roughly sketching. But I recommend you do a prototype project first to establish what CiviCRM + website can do out of the box, what it can not do without customization and how important that is for you etc. 

And probably contact a CiviCRM partner in your region to help you with that important first step. You can find an expert in your region here: https://civicrm.org/partners-contributors