This can be tested using a holo TC or MMA urine test, which only measure the usable B12 (holo TC) or the metabolic product (MMA test)
Brad Kamitaki, an assistant professor of neurology at Rutgers Robert Wood Johnson Medical School
Physicians Committee for Responsible Medicine
You can choose a NAD+ drip one week and then get a vitamin B12 shot at your next visit
Consult a licensed provider before treatment if you are pregnant or breastfeeding, have significant liver or kidney disease, have a history of allergies to any ingredient (including B12/cobalt), are taking other medications, or have unmanaged medical conditions
El investigador es responsable de calibrar concentraciones y frecuencias segn su sistema experimental, la literatura de referencia y las normas de bioseguridad de su laboratorio