Hey guys, when we first rolled this out, 1/2 of the test team had their kits put on hold and I got an e-mail and phone call from our USDA(US department of agriculture. This product has beef blood from Europe in it, which throws up a red flag, but we all got out kits after a phone call. Kees from biotabs has stated that some get snagged, while other get passed on through with no problems. Kind of like ordering seeds, some might get snagged at certain locations of postal hubs and most dont. If you all have concerns, email biotabs and Kees(the owner) will get back to you!