NucMed > RIAScott WilliamsApr 2, 2002RIA 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 HomeWhat causes lung cancers to be missed on screening?December 12, 2025Early PET/CT feasible in women with suspected breast cancerDecember 12, 2025Study highlights risk-based breast cancer screening; ACR respondsDecember 12, 2025Is AI ready for autonomous reads of chest x-rays?December 11, 2025