This is pretty cool
http://www.integrativepsychiatry.net/neurotransmitter_tests.html
http://www.integrativepsychiatry.net/neuroscreen_neurotransmitter_test.html

You can get neurotransmitter test kits to find out the levels of dopamine, serotonin and other neurotransmitters in your brain and find out if you have any deficiencies.

Fuck that, a million things can throw off your test results.

The neurotransmitters like dopamine and serotonin are not JUST about number and concentration, but about select pathways located in the CNS.

It tests urine metabolites.
And what about the whole peripheral?

Seems pretty useless to me, Unless you are a doctor, or a nutritionist, supporting your suggestion for proper nutrition in a patient.

This is even more worthless for drug users.

lol qft