Clinical Pathology: General Principles, Lab Management, Clinical Chemistry

• Physiologic factors that may affect laboratory results should be minimized before phlebotomy.

• Some types of physiologic factors include diurnal variation, exercise, fasting, diet, ethanol consumption, smoking, drug ingestion, and posture.

• An individual’s diet can greatly affect laboratory results.

• These dietary effects are transient and easily controlled.

• High-protein, low-carbohydrate diets, such as the Atkins diet, increase urine ketones and increase serum levels of blood urea nitrogen.



 
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