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I can't see any blood test results for iron eg ferritin or any other iron tests
For research use, material backed by independent HPLC verification and a published batch Certificate of Analysis provides documented confidence in what is supplied
Although the vitamin sounds like a single vitamin, there are in fact eight B vitamins that are more of less prevalent in different foodstuffs, and regularly added as fortification to breads and cereals, for example - thiamin (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folate/folacin or folic acid (B9) and cobalamins (B12)
Use the COA page and quality page as the source of truth for batch documentation
You can find more detail on B12 treatment timelines and schedules
After our call, I received my B12 shipment the next day
US$ 24.31
US$ 23.59
US$ 26.20
US$ 27.17
US$ 24.37
