'You probably know the routine for drawing blood. A medical technician briefly wraps your arm in a tourniquet and looks your veins over, sometimes tapping gently with a gloved finger on your inner elbow. Then the med tech selects a target. Usually, but not always, she gets a decent vein on the first try; sometimes it takes a second (or third) stick. This procedure is fine for the typical blood test at a doctor's office, but for contract researchers it represents a significant logistics problem. In drug trials it’s not unusual to have to draw blood from dozens of people every hour or so throughout a day. These tests can add up to more than a hundred thousand blood draws a year for just one contract research company.'
Enter the Veebot, which "can correctly identify the best vein to target about 83 percent of the time, says Harris, which is about as good as a human."
'Harris estimates the market for his technology to be about US $9 billion, noting that “blood is drawn a billion times a year in the U.S. alone; IVs are started 250 million times.”'
More, including a video (if you can bear to watch...)
This could reduce the incidence of misleading blood count results. My highest ever LDH reading was after I let a trainee gain some experience on me - and the regular phlebotomist had to intervene.