Do these lab tests detect nicotine or marijuana? 1)m.e.r 2)ecg 3)sbt-13 4)rua 5)hb% thank you?

The letters you posted only vaguely correspond to common tests in the US. MER has no meaning to me. None of the rest look for drugs. In the US a person must sign a consent before a test for drugs is done unless it is implied consent from an employment application. Testing for the cited drugs involves added work/materials/machines.

Lab tests can detect nicotine and marihuana. These tests need to ordered specifically by your doctor. These would not be tested for if not specifically requested.