3 The UK National Institute for Health and Care Excellence (NICE) states that a cut-off of 200 ng/l identifies 97% of people with B12 deficiency, and a level below 100 ng/l is usually accompanied by metabolic or clinical evidence of B12 deficiency
(PubMed) Lin J, Lee IM, Cook NR, et al
Do You Need a Vitamin B12 Injection
Consistent hydration throughout the day
If you're in a risk group reduced food intake on GLP-1s, plant-based diet, long-term metformin or PPI use, over 50 and fatigue is dragging you down, checking your B12 is one of the highest-ROI moves you can make
B12 is a water soluble vitamin and when given in the injection formula, it usually last a week versus a pill or liquid form that only last a few hours