Dried urine test, which includes:

• Melatonin (6-OH-Melatonin-Sulfate)
• Oxidative Stress/DNA Damage (8-Hydroxy-2-deoxyguanosine)
• Vitamin B12 Marker (Methylmalonate)
• Vitamin B6 Marker (Xanthurenate)
• Glutathione Marker (Pyroglutamate)
• Dopamine Metabolite (Homovanillate)
• Norepinephrine/Epinephrine Metabolite (Vanilmandelate)
• Serotonin Metabolite (5-Hydroxyindoleacetate)

See test details here: https://dutchtest.com/news/new-organic-acid-tests-added-to-the-dutch-test