Rheumatoid Arthritis Treatment

I passed out in my car and got into an accident. I had a prescription for oxycontin, and it showed up in a lab test as being 71ng/ml. I’m pretty sure a “positive” test shows up at 100ng/ml, but I’m not sure. I have a court case coming up, and I need to interpret these results but am unable to find a chart showing different levels and what they mean.
My dose was at 5mg extended release. I have a valid prescription, a diagnosis of rheumatoid arthritis and degenerative spine disorder, a positive history for TIA, low blood pressure, seizure and migraine.
I’m afraid if I mention this (especially the seizure and tia) that they’ll take away my license for good, but I also want to show that there were potential other causes for this episode of syncope.
If anyone does blood draws and can read labratory testing results, I’d greatly appreciate your input. If you’re “not sure” or googled an answer, it really won’t help me- I need someone who can read and interpret lab results.
All I have is a public defender, so I need to do most of the research on my own.