The question of “how many vials of blood can be drawn at once?” is a concern for many when they see the amount of blood testing their doctor wants them to undergo. Luckily, there has been a lot of research and studies conducted around this question to ensure that blood drawing is always safe. But it’s good to know that a single vial of blood is a minuscule amount compared to the volume of blood in your body. Check out some facts below so when you go in for your blood drawing with Speedy Sticks you can feel confident knowing you’re completely safe and in good hands. Book a blood draw today!