b12 injection side effects spots Vitamin and Safety How to Give B12 Injections

Serum ferritin is a key marker, showing the bodys iron stores

Nothing ruins injection confidence like scrambling for an alcohol swab with a loaded syringe in your other hand

A consultation with a Primary Care Provider is still a good idea if: Your B12 levels are persistently low or high without explanation You have a family history of autoimmune conditions or GI cancers You are vegan, over age 60, or on long-term medications that may interfere with B12 If symptoms persist, especially if they worsen, seeking medical attention is important to determine the cause and start appropriate treatment, says ter Keurs

In such cases, someone with the MTHFR gene variation may seem to have elevated levels of B12 (as well as elevated levels of homocysteine), but will actually have low levels of B12 in the form that their body can utilize

Causes of deficiency can include an insufficient diet of animal products, gastrointestinal problems that affect absorption, and certain autoimmune medical conditions

mSystems 5 (1), e00765-19