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 range for total protein in the blood?

5.0-7.0 g/dL
6.0-8.3 g/dL
4.0-6.5 g/dL
7.5-9.5 g/dL

The correct answer is: 6.0-8.3 g/dL

The normal range for total protein in the blood is typically defined as 6.0 to 8.3 grams per deciliter (g/dL). This measurement reflects the total amount of proteins present in the blood, including albumin and globulins, which are vital for various bodily functions such as maintaining oncotic pressure, transporting substances, and contributing to immune system function. When considering the other ranges provided, 5.0-7.0 g/dL is slightly lower than the accepted normal range, therefore may not encompass all individuals' protein levels, especially in different clinical situations. The range of 4.0-6.5 g/dL is also below the normal threshold, potentially missing patients with adequately higher protein levels. Lastly, the range of 7.5-9.5 g/dL exceeds the normal levels, indicating hyperproteinemia, which can be a sign of underlying conditions or abnormalities. Thus, the selection of the normal range of 6.0-8.3 g/dL encapsulates the majority of healthy individuals and aligns with standard laboratory reference values, making it the correct answer.