Is the Ooze radioactive?

[neatoman]

The discussion about Last Ronin's final issue sparked an... Interesting discussion about how the Turtles contaminated April and Casey. I'm not going to to go into the more exotic theory about what specific thing would cause it, I'm just assuming Waltz and Eastman wrote it under the notion that the ooze is radioactive and that's enough for exposure, either that or it leaked out in some other way that wasn't considered. What was discussed is whether or not there are any previous mentions of the ooze being radioactive or if this was just an assumption.

So, do you think it's radioactive?