calcemie

Calcemia refers to the measurement of calcium concentration in the blood serum or plasma. It is a routine laboratory test used to assess calcium homeostasis in the human body and diagnose various medical conditions related to calcium metabolism.

Calcium is an essential mineral that plays crucial roles in bone health, muscle contraction, nerve signaling, blood clotting, and cellular functions. The body maintains tight regulation of calcium levels through the interaction of parathyroid hormone, calcitonin, and vitamin D.

Normal serum calcium levels typically range from 8.5 to 10.5 milligrams per deciliter (mg/dL) or 2.1 to 2.6 millimoles per liter (mmol/L). Values outside this range may indicate underlying health issues. Hypercalcemia, characterized by elevated calcium levels, can result from conditions such as hyperparathyroidism, certain cancers, excessive vitamin D intake, or kidney disease. Symptoms may include fatigue, nausea, confusion, and kidney stones.

Hypocalcemia, or low calcium levels, may occur due to hypoparathyroidism, vitamin D deficiency, kidney failure, or magnesium deficiency. Clinical manifestations can include muscle cramps, tingling sensations, seizures, and cardiac arrhythmias.

The calcemia test is often ordered as part of routine metabolic panels, preoperative assessments, or when patients present symptoms suggestive of calcium imbalance. Factors that can affect test results include albumin levels, certain medications, and timing of blood collection. Total calcium measurements may need adjustment for albumin levels, or ionized calcium testing may be performed for more accurate assessment.

Healthcare providers use calcemia results alongside other diagnostic tests and clinical findings to develop appropriate treatment plans. Management strategies depend on the underlying cause and severity of the calcium imbalance, ranging from dietary modifications and supplements to medications and surgical interventions for specific conditions.