Is it possible that uring an MRI can tattoo ink from a professionally done tattoo leech into the bloodstream causing a severe reaction like iron poisoning?

I just had an MRI and they told me that if you "recently" had a tattoo, it can pull some of the ink out. Unlikely at best. Most pigments are carbon based and therefore non-metallic / non-magnetic. It's totally possible if you got your tattoo in JAIL, but otherwise, not if you got it in the last 20 years. no one uses lead based or metallic ink anymore

While it is highly unlikely that an MRI would cause any problems the above answer is incorrect. No agency regulates tattoo inks, and metallic inks are still being manufactured. With the recent scares regarding lead and other toxins in products imported from China there may be reason for concern...Many tattoo inks are made in China. A LOT of black tattoo ink is made from iron oxide. No one uses lead-based or Mercury-based ink anymore, but almost all tattoo ink is made from metallocene pigments--they are more durable than dyes or plastics. My bet: if you got the work done recently an MRI machine can pull the ink out.