Patient Care Technician (PCT) AAH Practice Exam

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What is the normal range for sodium (Na+) levels in the blood?

130-135
136-142
145-150
120-130

The correct answer is: 136-142

The correct range for sodium (Na+) levels in the blood is indeed 136-142 mEq/L. This range is essential for maintaining normal physiological functions, including fluid balance, nerve transmission, and muscle contraction. Sodium levels that fall below or exceed this range can lead to health complications. For instance, sodium levels lower than 136 mEq/L may indicate hyponatremia, which can result in symptoms such as confusion, seizures, and increased risk of falls, whereas levels above 142 mEq/L may suggest hypernatremia, potentially leading to thirst, restlessness, or even more severe neurological issues. Therefore, recognizing the normal range is crucial in clinical practice for monitoring and managing patient health effectively.