one test done, another for the DOT on tuesday...need help

I took one test today, don't know if i passed or not but i'm fairly confident. It was an EMIT test with a cap of 100 ng/ml and i drank a shitload of water with certo and took some asprin. It is for a job on a boat, and i found out today that I need to take another one on tuesday, this one for the department of transportation as required by the coast guard. I have only taken drug tests given by the employer (worked at the marina instead of on the boat and was not required to take the additional test) and this one is going to be conducted at a fairview regional clinic. Anyone know what type of test I should expect? Will it be another EMIT test? I should find out tomorrow if i passed the first one but im still worried. Any help would be appreciated.

does asprin have ibuprofen in it? because if it does, taking some will only hurt your test, because in higher dosages it will come up positive for marijuana

i passed my first test!, with only 3 day warning (3 days of not smoking) with the certo and water method...let you know about the next one