I've searched through the web for how to measure neurotransmitters (such as dopamine, serotonin, and oxytocin), but could not find any. Could someone please specify if there is a unit of measurement, like micrograms, for neurotransmitters? And if there is, can you please tell me which one? My hunch is some form of mass.
This is because they are usually used in solutions as an infusion. If you were to be just talking about how much neurotransmitter you have, you'd use any unit of mass.