These are similar drugs and will produce similar effects. The metabolism is similar although differences can be detected by very specific testing. A simple drug screen will usually not detect the subtle differences between these drugs. However, for something this serious you will need an expert in drug testing and a lawyer. Also, you will need to find out how specific the drug testing is.
Most drug screens are of the less expensive variety.
SR Spansules, every 6 hours. I weigh 85 kg. The 5-mg tablets were working optimally at the indicated rate, with no side effects. I prefer the tablets. Please, tell me what you think.