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doi:10.1016/j.lfs.2011.01.015 Sikiric P, Seiwerth S, Rucman R, et al

W., Rosenberg, I

Aljohani, A

So a 5 mg vial contains 5,000 mcg, and a 250 mcg dose is 0.25 mg

In case if the colour continues to remain same please contact your physician

This confirms that the pen is delivering solution and that air has been expelled from the needle assembly
