vitamin B12 Sep 05, 2025 Why vitamin B12 test is Done? Guide by Redpath Diagnostics Do you ever feel like your body is trying to tell you something? Perhaps you have a constant, nagging fatigue that sleep can't fix, or a strange numbness and tingling in your hands and feet. For many, these aren't just minor inconveniences; they could be a sign of a deeper issue—a vitamin B12 deficiency symptoms. Explore More