Hello again and thank you for that information, although I am not exactly sure how you found out about your test results without someone telling you and then questioning you. However, if no one questioned you and you didn't make any admissions, then that is best. That way, should it come to something more than an Article 15, your attorney might be able to find an issue with the chain of custody
on your sample that could conceivably get you off. That said, assuming that there is no problem with the chain of custody and the Command does what most Commands do in this case and award punishment at an Article 15 hearing, then you also have to be (under Service regulations) processed for administrative separation
If you have a stellar record, then there is a slight chance you might get a General under Honorable Conditions discharge. However, it is more common to end up with an Other than Honorable with drug use. Unfortunately because you have not served enough time in the Army, you would not have a right to an administrative discharge board (hearing.) In other words, your Command can process you without the right to be heard at a discharge board.
But to back up to your original question, once you are read your Article 31b rights (right to remain silent, etc.) you can invoke your right to remain silent. Then the Command will decide what to do with your case. If you are going to be sent to an Article 15, then once they give you the Article 15 paperwork, you have the right to speak to a TDS attorney and decide whether or not to accept NJP
(article 15) punishment, or demand court-martial. The latter would only be a good idea if your TDS attorney thinks the Command has proof problems (chain of custody issues). In any event, you have the right to speak to an attorney once the forum for punishment/hearing is chosen.
Please let me know if you need any clarification. I would be glad to assist you further if I can.