They are for reference only
Recommendations depend on provider evaluation, patient goals, and medical appropriateness
This knowledge also explains why oral B12 supplementation may be ineffective in intrinsic factor deficiency, requiring alternative routes like sublingual, nasal, or injectable B12 to bypass the intrinsic factor-dependent absorption pathway
Vitamin B12 is an important water-soluble vitamin that plays a central role in several aspects of health, including brain function, heart health, and the production of red blood cells and DNA
These commenters recommended CMS provide clear guidance, ample testing time, and financial support for system upgrades