Nutrient Markers

Ferritin alone is insufficient for assessing iron status because inflammation can distort it. Iron is relevant to detoxification, inflammation, muscle oxygen transport, and anemia risk. High circulating B12 and B9 with neurological dysfunction may indicate poor utilization rather than adequate function. Methylmalonic acid is presented as a functional test for whether B12 is usable. Iodine status should be interpreted with a full thyroid panel to clarify thyroid dysfunction and treatment direction.