I think this is disgusting. And yes, I think you are being taken for a ride, unfortunately Whenever I take my dog for his yearly jabs, because he is now elderly, the vet always wants to do blood tests, but because he is in excellent health for his age and has no problems, I absolutely refuse. I firmly believe it is a way to make more money out of me. He had his teeth cleaned over three years ago and I had to let them take blood tests because of his age. The results seemed alarming, telling me that 'we' had to keep an eye on his liver, but here we are over three years later and as I stated, he's in excellent health for a 14 year old dog. I know my own dog and if I thought there was anything wrong with him at all, he'd be at the vet's pronto! If I was you, I would either refuse further blood tests or see another vet - good luck.