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Creatinina en orina - Overview

Nombres alternativos

Examen de creatinina en orina

Definición:

La creatinina es un producto de la descomposición de la creatina, que es una parte importante del músculo. La creatinina es eliminada por completo del cuerpo por medio de los riñones. Este artículo aborda el examen que se hace para medir la cantidad de creatinina en la orina.

También se puede utilizar un examen de sangre para determinar el nivel de creatinina. Ver: creatinina en suero

Forma en que se realiza el examen:

Se puede utilizar una muestra de orina aleatoria o una muestra de orina de 24 horas. Para obtener información sobre cómo recoger la muestra, ver el artículo: recolección de orina en 24 horas.

Preparación para el examen:

El médico puede solicitarle que temporalmente deje de tomar algunos medicamentos que puedan interferir con los resultados del examen. Tales medicamentos abarcan:

  • Cefalosporinas (cefoxitina)
  • Cimetidina
  • Cisplatino
  • Gentamicina
  • Trimetoprima

Lo que se siente durante el examen:

El examen implica únicamente la micción normal y no produce ninguna molestia.

Razones por las que se realiza el examen:

Este examen puede utilizarse como prueba de detección para evaluar la función renal y también usarse como parte del examen de la depuración de creatinina. Con frecuencia, se utiliza para brindar información sobre otros químicos en la orina como albúmina o proteína.

  • Reviewed last on: 8/7/2009
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Referencias

Bazari H. Approach to the patient with renal disease. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 115.

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