Can anyone give me info on PICA?

Km

So apparently I have to be actively eating the substance I want for a month before I can be diagnosed with PICA or have my blood tested for more than iorn and hemoglobin.

I think it's a crock, but whatever.

There's obviously something wrong if I want to eat Comet the floor cleaner. But nope, gotta eat it for a month before I can get help!