My vitamin b12 level from my blood test is extremely high 1,576.00 What causes that And should I BE concerned. I do have Hashimotos thyroiditis,hepatitis c,hypertension, chronic pain (esp.BACK,NECK ETC.) AND JUST FOUND OUT THAT MY AORTIC VALVE AND MITAL VALVES HAVE MODERATE AND MILD REGURGESTATION. I WAS HOSPTALIZED FOR MENTAL STATUS CHECK AND CONFUSION, WHILE IN ER BECAME COMPLETELY CONFUSED,NEEDING RESTRAINTS (NO MEMORY OF THIS) FOLLOWED BY ACUTE RESPIRATORY FAILURE REQUIRING INTUBATION,NG TUE,THE WORKS BUT THEY PULLED ME THROUGH. MANY TESTS STILL DON T KNOW CAUSE OF RES. FAILURE. HEMOGLOBIN 10,RBC 3.35, HEMATOCRIT 32.9, SATURATION %10 BILIIRUBIN 0.2. MANY OTHERS CAN YOU HELP?