For both adults and children experiencing complex or chronic health concerns, one very comprehensive lab test that I highly recommend is the Organic Acids Test (OAT). This noninvasive urine test provides important insights into the body’s cellular metabolic pathways. By measuring over 70 urinary organic acid by-products, we can get a good read on one’s vitamin and mineral status, neurotransmitter health, mitochondrial energy production, methylation, digestive health including bacterial or yeast overgrowth, mycotoxins, inborn errors of metabolism, as well as oxidative damage and detoxification abilities.