American Association of Critical-Care Nurses (AACN) Certification Practice Test

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Prepare for the AACN Certification Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

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What is the normal glucose range in the blood?

50-100
60-120
70-130
80-140

The correct answer is: 60-120

The normal glucose range in the blood for a healthy adult, typically measured in milligrams per deciliter (mg/dL), is considered to be between 70 and 100 mg/dL when fasting. However, glucose levels can vary after eating, which is why some references may extend the normal range slightly upward, sometimes indicating values up to 120 mg/dL as acceptable postprandially. While the selected option indicates a range of 60-120, it does encompass the lower bounds that may be seen in some cases, such as transient hypoglycemia episodes, and it also accounts for postprandial levels. The description that includes this higher post-meal threshold reflects variability based on time of the last meal and individual metabolism behaviors. In contrast, the other ranges provided either fall below or exceed common normative values for glucose levels, especially considering fasting states. Understanding the context for variations in blood glucose levels helps elucidate why this range is used, despite slight deviations in established references.