Youve had a gastric bypass or GI disorders (like Crohns or IBS), which reduce nutrient absorption

Jay Campbell Female Hormone Optimization Panel HSA/FSA reimbursable Complete Blood Count / CBC (includes Differential and Platelets): WBC, RBC, Hemoglobin, Hematocrit, MCV, MCH, MCHC, RDW, Platelet Count, MPV and Differential (Absolute and Percent - Neutrophils, Lymphocytes, Monocytes, Eosinophils, and Basophils) Comprehensive Metabolic Profile (includes eGFR): Albumin, Albumin/Globulin Ratio (calculated), Alkaline Phosphatase, ALT, AST, BUN/Creatinine Ratio (calculated), Calcium, Carbon Dioxide, Chloride, Creatinine with GFR Estimated, Globulin (calculated), Glucose, Potassium, Sodium, Total Bilirubin, Total Protein, Urea Nitrogen Cortisol, Total Dehydroepiandrosterone (DHEA-s) Sulfate DHEA (Dehydroepiandrosterone), Unconjugated, LC/MS/MS Estradiol, Serum Follicle-Stimulating Hormone (FSH), Serum Luteinizing Hormone (LH), Serum Hemoglobin (Hgb) A1c Insulin-Like Growth Factor I (IGF-I) Lipid Panel: Cholesterol, total

It may also occur if your diet is deficient in foods high in vitamin B12 or if you are using drugs that prevent the absorption of this vitamin
May Help Prevent Heart Disease and Stroke Dr