NucMed > RIAScott WilliamsApr 2, 2002FacebookLinkedInX (Twitter)Pinterest Add us as a preferred source on Google 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 FacebookLinkedInX (Twitter)Pinterest Add us as a preferred source on Google Latest in HomeASTRO highlights study on disappearing radiation oncology centersJuly 10, 2026CCTA finds coronary disease in men with erectile dysfunctionJuly 10, 2026Marijuana use linked to greater coronary plaque burdenJuly 10, 2026CEM on par with MRI for breast cancer diagnosis, local stagingJuly 10, 2026