The process is called Confirmatory Typing or sometimes also named Verification Typing (VT), whereby CT, in contrast to VT, includes extended typing.
After an initial search request and a list of potential donors has been identified, search coordinators can then request a CT or a Health and Availability Check (HAC).
A CT request involves a blood test and a health history questionnaire from the donor. For urgent searches or for donors who have all HLA results available, a HAC can be requested to determine if the donor is still available and medically fit to donate. A HAC does not include a blood sample, however a blood sample will be taken during the preliminary examination. This saves both time and costs. Please note that a HAC is not available in the US. You can find out more information on how to request a CT and HAC and the process in our related services.
In the US, we also offer a preliminary search prior to a CT request to verify the contact details of the prospective donors.
As part of the initial donor search process an Infectious Disease Markers (IDM) report and High Resolution (HR) report can also be requested.
We have a CT team at each of our locations, who take care of all requests for national donors.