Pre-existing inborn errors of sulfur-amino-acid metabolism (e.g., homocystinuria) represent an absolute contraindication because parenteral methionine can exacerbate elevated homocysteine concentrations and associated thrombotic risk
however, there have been no significant changes in B 12 testing over the past decade
Typically, 'less than 50' might be a response, depending on the method used and the laboratory
Without enough Vitamin B12, our bodies can suffer from various adverse health effects, including fatigue, anemia, and nerve damage
This treatment is commonly used to address deficiencies caused by poor diet, malabsorption issues, or certain medical conditions such as pernicious anemia