You might like to look at some testing flow charts in this thread:
secondlifestorage.com
Looking for cells to weed out early (before charge/discharge testing) is likely to save a lot of time.
Like Wolf says above, Eg testing for low voltage & poor IR first.

18650 Harvesting Flow Charts
As a community we all have our different ways of processing cells and I wanted to take the opportunity by starting this thread to find some common ground on how we all should harvest cells. This is not meant to be a "be all end all" but more of a guide for new members and maybe some senior...
Looking for cells to weed out early (before charge/discharge testing) is likely to save a lot of time.
Like Wolf says above, Eg testing for low voltage & poor IR first.