Where do I find blood tubes? I found the vacuum tubes at pbs animal supply, but those aren't the tubes I can ship in. I need either plastic or glass screw top vials, or glass vials with rubber stoppers to ship them to the testers... This place is the pan american vet labs in tx, does anyone know of a testing facility closer to me, or that I don't have to find screw top vials/rubber stopper vials for? They only sell those in like packs of 500-1000, and for like 150+ dollars. Er.