1) Academic second go-around 2) Additional trial 3) Assay again 4) Check again 5) Check over 6) Check results 7) Check up on anew 8) Do lab work over again 9) Double check 10) Double-check 11) Exam compared to a prior one 12) Examine again 13) Examine anew 14) Give a make-up exam to 15) Give a makeup to