As B12 serum is going to be tested it may be interesting as the last time that was tested I was over 2000 whatevers so if it is any less it would add to the evidence that the vials were deteriorating over time
Essential Quality Markers When buying 5-amino-1MQ, verify: Third-party HPLC testing showing 98% or higher purity Mass spectrometry confirmation Certificates of analysis (CoA) for each batch Sterility testing for injectable forms Proper vacuum-sealed packaging Learn to verify quality: How to Read a Certificate of Analysis
individual adipose-depot weights
Ultimately, this will vary from product to product
In gastric cancer after gastrectomy (which removes the gastric parietal cells and, thus, the source of intrinsic factor needed for normal vitamin B12 absorption), supplementation with vitamin B12 can prevent the development of vitamin deficiency (17)
Alterations in somatomedin can result in growth hormone deficiency with two known mechanisms