how long after b12 injection blood test Does a Shot Last Do I Need Lab Testing

Use the formula: (total peptide mass in mg desired dose per injection in mg) = number of doses

If not treated, they can cause lasting damage

It includes 1-5 intramuscular or subcutaneous injections of 1000 mcg crystalline cyanocobalamin daily, followed by oral doses of 1000-2000 mcg/day Parenteral administration should be reserved for those with significant neurological symptoms NICE guideline: Vitamin B 12 deficiency in over 16s: diagnosis and management: Malabsorption as the confirmed or suspected cause of vitamin B 12 deficiency: Offer replacement to people if: lifelong intramuscular vitamin B12 Autoimmune gastritis is the cause They have had a total gastrectomy They have had a complete terminal ileal resection If the person has a vitamin B 12 deficiency because of malabsorption that is not caused by autoimmune gastritis, or a total gastrectomy or complete terminal ileal resection (for example, malabsorption caused by coeliac disease, partial gastrectomy or some forms of bariatric surgery): Offer vitamin B 12 replacement and Consider intramuscular instead of

Qualifying BMI thresholds require either obesity (30 kg/m) or overweight status (27 kg/m) combined with comorbidities like type 2 diabetes, hypertension, or sleep apnea documented within the past 12 months