"positive for Meth +" is meth.
"negative for Meth" is... beer? No.
+ and - are not positive/negative
+ = clockwise
- = counterclockwise
clockwise rotating molecule
dextro-rotary = Meth [ + ]
(d,-methamphetamine)
examples: Desoxyn, street meth
counterclockwise rotating
levo-rotary = Meth [ - ]
(l,-methamphetamine)
examples: Vicks inhalers, Selegiline
(both dextromethamphetamine & levomethamphetamine are methamphetamines)
• levomethamphetamine is not a euphoric stimulant, so it will not keep you awake (if a Vicks inhaler keeps you awake, it's because you imagine it is keeping you awake i.e. it's a placebo effect).
Levomethamphetamine acts on the sympathetic nervous system (breathing is a sympathetic nervous system function)... while stimulant methamphetamine acts on the central nervous system (euphoric state is a cns function).
Isopropylbenzylamine would not present those symptoms. There is a lot of confusion about isomer chains people have misunderstood
You said the lab work from the hospital detected dextromethamphetamine
(meth [+]). So, it was just the usual street methamphetamine.
Who knows how pure or cut it was - or with what it was cut. You said no meth [ - ] was detected - so it wasn't cut with that "other" stuff (the also-methamphetamine-stuff). Most stuff used for cut won't show up on the lab report.
Another explanation for the nodding out after ingestion would've shown up on the labs but presumably didn't - so it wasn't contaminated with fentanyl
The symptoms (blood pressure, convulsions) are consistent with methamphetamine overdose. Even at 6 grams or more - methamphetamine overdoses are generally nonfatal.