[16] The European Food Safety Authority (EFSA) refers to the collective set of information as "dietary reference values", with population reference intake (PRI) instead of RDA, and average requirement instead of EAR
Clinical Therapeutics, 10 (5), 543-552
None of that makes reviews worthless, but it does argue for reading them as impressions rather than measurements
Now this is only for research purposes only, but let's start with it
An elevated methylmalonic acid (MMA) level has been thought to be the most direct, metabolic indicator of B12 deficiency because B12 is the only cofactor required by the enzyme that degrades MMA
Medial Collateral Ligament Healing Cerovecki et al., Journal of Orthopaedic Research (2010) Cerovecki and colleagues conducted a controlled rat study evaluating BPC-157 in medial collateral ligament (MCL) healing following surgical transection