the 2c's are in the phenethylamine group, which are related to mescaline and MDA/MDMA.

Is there any drug similar to acid (besides shrooms) that doesn't show up in drug tests forever after?

I mean acid is the one drug i'd actually do and i still can't do it!

I don't know about USA, but in Norway it is not procedural to test for 2c-x's. So 2c-b or 2c-i or 2c-e should be ok and I guess they're fairly acid-like. I, at least, prefer 2c-b to acid since acid can be such a confusing experience (which is kind of cool after it's over but can be pretty frustrating when you're on it!)

sredni nobody is going to test you for LSD. 99% will test for marijuana/coke/speed/heroin/etc but not lsd/psychedelics. i dont know what you are getting drug tested for so maybe they WILL but probably not.

lsd isnt in your spinal fluid anyway

lsd has an "elimination half-life of 2.5 hours" so you'd still have to be actively tripping on it for it to be testable.

So I recently stumbled upon someone who has 2C-B.  My first trial was pretty strange (roughly 15-20mg).  It felt kinda like 2C-I but I didn't feel a strong shift towards positive things.  It was a pretty introverted trip, which was hard since I was with a large group of people.  Lots of morphing/shifting/mild patterns in my visual field.  Music had a warped quality to it, which was enjoyable.  I felt grounded during the entire experience but the peak left me feeling confused.  Slept about 6 hours after taking it =D

I might try a larger doese in the near future.

2c-i is my fav