What happens to an ABG specimen left at room temperature for a prolonged period?

Prepare for the CalRegional Phlebotomy Exam with practice tests, flashcards, and multiple choice questions. Each question is equipped with helpful hints and explanations. Get ready to ace your certification!

Multiple Choice

What happens to an ABG specimen left at room temperature for a prolonged period?

The test is about how cellular activity in an ABG sample continues after collection if it’s not kept cold, and how that alters the measured gas levels. When the blood is at room temperature, the cells don’t stop metabolizing. They keep consuming oxygen and producing carbon dioxide. That means the sample’s oxygen level drops while the carbon dioxide level rises. The ongoing metabolism also shifts the pH toward acidity because CO2 forms carbonic acid in solution. So the idea that cells keep metabolizing, that oxygen is used up, and that CO2 increases all describe the same process happening in the sample. That’s why all of those statements are correct. To preserve accuracy, ABG specimens should be placed on ice or analyzed promptly to slow metabolism.

The test is about how cellular activity in an ABG sample continues after collection if it’s not kept cold, and how that alters the measured gas levels. When the blood is at room temperature, the cells don’t stop metabolizing. They keep consuming oxygen and producing carbon dioxide. That means the sample’s oxygen level drops while the carbon dioxide level rises. The ongoing metabolism also shifts the pH toward acidity because CO2 forms carbonic acid in solution. So the idea that cells keep metabolizing, that oxygen is used up, and that CO2 increases all describe the same process happening in the sample. That’s why all of those statements are correct. To preserve accuracy, ABG specimens should be placed on ice or analyzed promptly to slow metabolism.

More practice questions