To      :Mimi
Re      :Radiocontrast Agents

The injectible diagnostic agent you mentioned (non-ionic) are iodine containing
radioconstrast agents used for CAT scans, MRIs and other radiologic scans.
Even the product literature from these companies states that you only need pump
and dump for 24 hours.  However,  reviewing the kinetics of these agents shows
them to have very short half-lives ( < 1 hr), and almost no oral absorption.
Which in essence suggests that even if they were to penetrate milk,  the infant
would not absorb them at all.  We use these radiocontrast agents in neonates
all the time, without major side effects.
There are literally dozens of these agents and I have provided some of the more
common names.

Common Names:
Omnipaque,  Conray,  Cholebrine, Telepaque, Oragrafin, Bilivist, Hypaque,
Gastrografin, Renovue-Dip, Angiovist,  Optiray , etc.

Regards

Tom Hale