I think the first scariest time was when the pediatrician's office called with the results of her UA. I knew "something" was going on, and had been told by some of her friends that she was using meth... but that was SO preposterous!! And her story absolutely made me feel better...after all, those new friends of hers ALL came from single parent households, with little supervision and heck, they were a bunch of little obnoxious drug users themselves!
About a month later, following an all-night gone incident, I had her go to the hospital and drop off a UA to "prove" her story.
Then I got the call at work... and when the doctor said, the test came back positive for meth... I thought the world had disappeared beneath me... I must have held my breath or something, because it did get darker. And for the first time that I can remember, I didn't know the right answer to something that might mean life or death.
That was the first scariest time... but far from the last.