What is the normal range for magnesium levels?

The normal range for magnesium levels in the serum is indeed between 1.7 and 2.2 mg/dL. This range is important for many physiological functions, including muscle contraction, nerve function, and enzyme activity. Magnesium plays a crucial role in over 300 biochemical reactions in the body, including energy production, protein synthesis, and nerve transmission. Levels outside of this normal range can indicate various health issues; for instance, low magnesium levels (hypomagnesemia) can lead to neuromuscular symptoms and cardiac arrhythmias, whereas high levels (hypermagnesemia) can also have serious clinical implications, affecting muscle and nerve function.

In reference to the other options, the ranges provided are either too low or too high to reflect the normal physiological state expected in the average adult. Understanding the correct range helps in diagnosing potential electrolyte imbalances and managing patient care effectively.