Does the administration of a radioisotope to humans raise any issues?
Not in the case of IVPK studies as the amount of radioactivity is so low. A typical amount of radioactivity used in a ABioPK study is 200 nCi, which is only about twice the naturally occurring background. There are some countries (eg Japan) where the administration of any amount of 14C is problematic but notwithstanding this, Xceleron has never experienced any significant regulatory issues in this respect.
