I can't comment whether or not the blood work is necessary, but I would absolutely be with Binky during the procedure! I just went through this with my little Tuptake last month. The vet tech came in and just took her and said I'll just take her blood, we'll be right back. Oh, how I regret that. I don't know what happened in that room, but I fear I may have lost the love and trust of my dear little buddy forever. She is a completely different cat and treats me like a stranger. PLEASE listen to StephanQ, and don't make the same mistake I did. I feel terrible for you, AdventureMe. These little ones are such an important part of our lives. Hope everything goes well for little Binky.