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 HomePatient-friendly radiology reports improve family comprehensionAugust 5, 2026Early CTA leads to improved stroke outcomes for patients with BCVIAugust 5, 2026Most histotripsy procedures used for metastatic disease treatmentAugust 5, 2026Imaging turnaround times continued to climb in 2024August 4, 2026