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After a B12 shot, blood levels rise well above the desired range (150-700 pmol/L in most places), and stay high for a while
doi:10.1136/bmjopen-2020-041290

To view a copy of this licence, visit About this article Cite this article Leleu, X., Martin, T., Weisel, K

Yes, many reusable insulin pens accept standard 3 mL cartridges and work perfectly for peptide delivery
