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It's best to follow their directions and use this article as a refresher
Withdraw B12 : Drawing Medication : Invert the vial with the needle still inserted
In our experience, its one of the best B12 injection sites because its easy to reach and usually has enough fat
And if you're allergic to cobalt, B12 injections aren't for you
Step 3: Check for Blood Vessels (Aspiration) This next step, known as aspiration, is a quick but critical safety check
Its also essential to keep an eye on the expiration date
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