(You wont be surprised to learn that this isnt a thing most people need to do theres little evidence to support the claims that injecting B12 gives you increased energy)
That is measured by an elemental technique, inductively coupled plasma mass spectrometry or atomic absorption spectroscopy, not by chromatography, and a certificate reporting only peptide purity has not established that the material is a complex at all rather than a peptide with some copper alongside it
Je werkt accuraat, je bent punctueel en zorgvuldig
Certain medications are associated with lower B12 over time, including metformin and long-term acid-suppressing therapies
Low potassium causes exactly the symptoms people describe: muscle weakness, fatigue, cramps and sometimes palpitations
Reduction in symptoms of depression and anxiety