@amanancy good! However, remember the blood test shows what's in your blood system not what your body has digested. I am on B12 injections. A lot of doctors won't give you suppliments if you are one point over the line of borderline. (which I was!) so I insisted. made a huge difference. My body doesn't digest what I give it properly. I test for D too to stay in the balance. Same with things like calcium.