SH scars and medical check up for a job offering

Tomorrow morning i have a MCU for a job offering, it’s the last step. MCU is my one of biggest fear bc i’m scared the doctor / nurse will see my sh scars, on my left wrist. I asked most of my friends and all of them said that my blood will be taken from my left arm AND IM SCAREDDDDD. The scars are pretty dented and white, around 2 week-ish. I can try to cover it with concealer but i’m still scared they will notice it.

Have anyone ever dealt with this and found a solution? Or even got noticed? Will it affect the results?

Thank you!