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Examen de Schilling - Results

Nombres alternativos

Examen de absorción de vitamina B12

Valores normales:

Orinar de 8 - 40% de la vitamina B12 radiactiva en un período de 24 horas es normal.

Nota: los rangos de los valores normales pueden variar ligeramente entre diferentes laboratorios. Hable con el médico acerca del significado de los resultados específicos de su examen.

Los ejemplos anteriores muestran las mediciones comunes para los resultados de estas pruebas. Algunos laboratorios usan diferentes medidas o podrían evaluar diferentes muestras.

Significado de los resultados anormales:

Los bajos niveles de vitamina B12 pueden causar anemia megalobástica.

Si existe un problema con la capacidad del estómago para producir el factor intrínseco, la etapa I del examen será anormal y la etapa II será normal.

Ambas etapas del examen de Schilling serán anormales en personas que tienen problemas de absorción de la vitamina B12 y el factor intrínseco en el intestino delgado.

Los resultados anormales pueden deberse a:

Enfermedad biliar
Enfermedad celíaca (esprúe)
Enfermedad de Crohn
Enfermedad hepática
Enfermedad pancreática

Examen de Schilling

Reviewed last on: 3/21/2010
Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; James R. Mason, MD, Oncologist, Director, Blood and Marrow Transplantation Program and Stem Cell Processing Lab, Scripps Clinic, Torrey Pines, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Referencias

Antony AC. Megaloblastic anemias. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 170.

Antony AC. Megaloblastic Anemias. In: Hoffman R, Benz EJ, Shattil SS, et al, eds. Hematology: Basic Principles and Practice. 5th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2008:chap 39.

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