That's because they mark every test tube for a particular set of analysis as procedures are different. Thus when they found a tattoo, they asked you for one more analysis to put the blood to a separate vial and perform tests. If they had known about the tattoo in the beginning, they would've taken some more blood to put to another vialGot my medicals done today. Due to my tattoo they wrote me up for hepatitis tests as well, so I had to give blood twice. Don’t know why they couldn’t just use the blood they’d taken 20 minutes before but they said they’d changed their procedures. It’s so silly because the blood is the same, it’s not like I got the tattoo after they took blood the first time
Anyhow, now the wait begins.