When we were thinking about it with Grim we had the vet collect sample (he said it would be a lot cheaper if I got it myself but I declined) and test it. I gather you don't use it you lose it.......he was sterile at age 8.
NAPWDA Certified Cadaver Dog
Waiting at the Bridge (italics
=GSDs) (hemangiosarcoma=blue):Grim , Cyra, Toby
, Rainbow, Linus, Oscar
, Arlo & Waggles