The donor may need to have the lab work done again if the transplant does not happen as scheduled (cancellation, no-show or illness). HIV testing is one of the things we do on potential donors. The HIV testing must be done no more than 14 days before the transplant. The other required lab tests need to be done no more than 30 days before the transplant. The date the transplant is rescheduled to will determine whether or not these tests need to be done again.