This is exactly why i was hesitant to post on her due to people like you!!! how on earth do you know my circumstances? your just jumping to conclusions and basically labeling me as somebody who takes drugs, you dont know me so dont judge me.
I was asking as i have my own personal reasons that i am not comfortable to disclose on here!!
Well let's be honest, if you are taking anything legitimately for what ever reason you will of course declare it and so it won't matter if it shows up on the test. The only reason you would want to test yourself beforehand is if you are worried something will flag up that you don't want flagged up.
They are pretty thourough with the drug screen so I doubt anything can be hidden from it but if it's all legitimate and any drugs you are taking comply with railway guidelines or any medical conditions which may give a false positive are disclosed then you just need to mention it at the medical and you won't have any problems.
Even if you do your own home test and it gives a clear reading I certainly wouldn't rely on it. If the railway medical finds something you didn't disclose then you simply won't get the job. Declare it and providing it's within regulations then you will be fine.
So unless you have something you are attempting to hide, and I'm not implying you are a drug addict in anyway, you have absolutely nothing to worry about and no need to test yourself.
I stand by what I said, I can't see any reason anyone would worry about the drugs screening.