Pun involving blood

I just got home from having blood drawn again (not blaming my PcP who is trying to find a balance between how much thyroid i need to have energy to get up in the morning, or even afternoon, and how much is too much for my osteoporosis, while at the same time pampering my kidneys.) I was reminded of this joke:

Three vampires walk into a bar. Bartender says, "What'll you have?" First vampire says, "I'll have a glass of blood, please." Second vampire says, "Same for me, thanks." Third vampire says, "I think I'll just have a glass of plasma today." Bartender says, "Right. Two bloods and a blood lite."

Unfortunately I only thought of it on the way out. Virtually no wait time, and the draw was fast and painless, so I didn't really have time to think. I'll try to remember it for next time.