3D Bioprinting is being used in laboratories to produce hearts, livers, kidneys, etc. and no doubt, will be printed in reality for organ transplantation in real patients. But this on the other side, has increased the risk of black market and the ways bad guys will be utilizing these 3D Printed Organs. Since these organs will be available for normal people easily, criminals will find ways to make it not so.
Source: http://www.wired.co.uk/article/printed-organs-black-market