The only thing they don't test are things you can somehow get legally, if I recall correctly (so whatever you can get for any psychological condition).
Also, these tests are set up in a way that they are anonymous in a way that e.g. even if prosecutors could subpoena a test-location or lab to hand over administration, this administration won't contain any PII or even pseudonymous information.
With LSD it's always a solution (either in paper or in liquid), so you can only trust the producer.
People who long for the old days must realize there were serious mental issues in society. It wasn't a simple case of the dids and the didn'ts. People were batsh*it insane, and I don't mean hallucinogens, especially not LSD that is not directly toxic at all. People were literally driven to hysteria by the ~thought~ of LSD.
The juggernaut opposing LSD and set the stage for the endless war on drugs. It was the boogeyman that could justify any legal atrocity. Lives could be destroyed, tripping teenagers were treated as if it was a life threatening medical emergency, which is trauma and sadism. The monkey brain slides that implied chromosome damage was deliberately not replicated after the mistake in handling was found, and the study was cited for a decade after author retracted it. Just too convenient to repeat the lie.
It is not surprising that G. Gordon Liddy a toady in Nixon's cabinet, spoke up at a meeting briefly to suggest putting LSD on opposition journalist Jack Anderson's steering wheel. As if it's presence would cause an instant accident that flipped the car 5 stories into the air. He was showing off his ignorance and trying to boost his reputation as a 'fixer'.
But far more dangerous than LSD, a few impaired people here and there was the mass hysteria to the 'plot' and 'scandal' that wouldn't work anyway and 3/4 of the country was consumed by it. That was in 1972.
Then along comes fentanyl that is really scary and not much serious pushback, until 'recently'.
brilliantly put
One dose would be tricky, but you could process twenty doses of "MDMA" via column chromatography and end up with a sample of MDMA which your scale can actually measure. There's nothing scary about twenty doses of MDMA except that maybe you'll get caught with it. If you dropped it, nobody would get hurt.
If you tried the same with LSD you'd have to process tens of thousands of doses before your scale would be of any use. That much LSD in solution is an accident waiting to happen. I wouldn't go anywhere near it.
Though biological products like psilocybin (or weed etc) are harder to measure and control by producers, in strength than purely chemical products like LSD or MDMA. It's hard to trace what mother nature did exactly when producing this particular mushroom cap, but it could be possible to trace what the chemist did when producing this particular blot. If only it were legalized and we could have actual control, tracability, and prosecution of malpractice...