Which of the following electrolytes is NOT part of the standard BMP?

The correct answer, which identifies magnesium (Mg) as not being part of the standard Basic Metabolic Panel (BMP), highlights an important aspect of understanding laboratory tests. The BMP typically includes measurements of sodium (Na), potassium (K), chloride, bicarbonate, blood urea nitrogen (BUN), creatinine, and glucose. While calcium (Ca) is sometimes included, it is generally more common to see it listed separately or as part of a Comprehensive Metabolic Panel (CMP), which adds additional tests.

Magnesium is not included in the standard BMP, emphasizing why the answer correctly identifies it. This distinction is important for healthcare professionals, as it informs which tests to order depending on the clinical situation. Knowing the components of these panels is critical for interpreting patient data accurately, affecting diagnosis and treatment plans.