re: can you get fired for a negative - diluted drug test?

Company substance abuse/employee handbook would give you a better answer than the stuff I’ve read here. Diluted (i.e. creatinine level below 20, is “deliberate overhydration in an effort to evade detection”. DOT regs require immediate recollection under direct observation. Usually this gives the donor enough time to eliminate any metabolites. That’s a federal rule. BUT, many employers can terminate you for violating the company policy even though you are allowed a recollect. So we can’t really give you a definitive answer. Check your handbook.