When should an ABG test be run?

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Study for the NHCO Phlebotomy Test. Experience flashcards and multiple-choice questions with hints and explanations. Prepare effectively for your phlebotomy exam!

Multiple Choice

When should an ABG test be run?

Explanation:
Arterial blood gas values are time-sensitive because the blood continues to undergo metabolic changes after collection, which can alter pH and gas tensions. To capture accurate in vivo values, the sample should be analyzed as soon as possible, with the best practice being within about 15 minutes of collection. Delays allow ongoing metabolism to change pH, PaCO2, and PaO2, making the results unreliable. If immediate testing isn’t possible, cooling the sample on ice can slow changes and extend stability, but the goal remains prompt analysis.

Arterial blood gas values are time-sensitive because the blood continues to undergo metabolic changes after collection, which can alter pH and gas tensions. To capture accurate in vivo values, the sample should be analyzed as soon as possible, with the best practice being within about 15 minutes of collection. Delays allow ongoing metabolism to change pH, PaCO2, and PaO2, making the results unreliable. If immediate testing isn’t possible, cooling the sample on ice can slow changes and extend stability, but the goal remains prompt analysis.

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