I was just going to suggest the same thing, you really do want to have the DNA test for Fanconi done unless his sire and dam have already been tested. You can check and see if they have at www.offa.org. and the DNA test is very easy, you just order it from OFA and it is a cheek swab, get the kit, swab the pup, send it in… done! Again for your own peace of mind, best 65.00 you will ever spend.
It really is too bad that all breeders do not test before breeding so that another Fanconi affected Basenji will never be born.
To learn about Fanconi go to www.basenjihealth.org