NucMed > RIAScott WilliamsApr 2, 2002 RIA The Schilling Test Vitamin B12 absorption physiology Indications for the Schilling Test Pre-Test Preparation Causes of false low serum B12 level Causes of false normal B12 Stage I Schilling Test Technique Calculations Causes for a false positive test Causes for a false negative test Stage II Schilling Test Stage III Schilling Test Stage IV Schilling Test Dual-isotope Schilling test Blood Volume Determination Physiology Plasma Volume Technique Calculations RBC Volume Calculations Sources of possible error Reporting Results Diagnosis Relative polycythemia Polycythemia vera Secondary polycythemia Red Blood Cell Survival Technique Calculations Splenic Sequestration Study Latest in HomeISMRM: Insulin resistance in women associated with less myelin, changes in brainMay 10, 2025ISMRM: Brain’s waste-clearing system accelerates brain aging after strokeMay 10, 2025ISMRM: Trimodal PET-MR-FUS may be feasible therapy monitoring optionMay 10, 2025ISMRM: Switching between full and short breast MRI reduces recallsMay 10, 2025Related StoriesHomeNucMed > Musculoskeletal > LymphHomeNucMed > Cardiovascular > Sestamibi imagingHomeNucMed > PET > PET myocardial imagingHomeNucMed > Cardiovascular > Perfusion Exam Findings