Nivel de vitamina B12

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Nivel de vitamina B12

Valores normales:

Los valores normales son de 200 a 900 pg/ml (picogramos por mililitro).

Significado de los resultados anormales:

Los valores de menos de 100 pg/ml indican una carencia o insuficiencia de vitamina B12, y es probable que las personas con dicha deficiencia tengan o desarrollen síntomas.

Las causas de deficiencia de B12 son, entre otras:

El aumento en los niveles de vitamina B12 es poco común, ya que es normal que su exceso se excrete en la orina. Sin embargo, los trastornos que afecten los niveles de esta vitamina en la sangre pueden llevar a que se presente demasiada cantidad de ésta. Estos trastornos abarcan:

Otras afecciones bajo las cuales se puede realizar el examen son:

Referencias:

Goldman L, Ausiello D. Cecil Textbook of Medicine . 22nd ed. Philadelphia, Pa: Saunders, 2003.

Hoffman R, Benz E, Shattil S, Furie B, Cohen H. Hematology: Basic Principles and Practice . 4th ed. Philadelphia, Pa: Churchill Livingstone, 2004.

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