MAGNESIUM (RBC)

The MAGNESIUM (RBC) test measures magnesium concentration inside red blood cells (erythrocytes), providing a more reliable indicator of intracellular magnesium status than routine serum magnesium. Intracellular magnesium is vital for enzymatic reactions, neuromuscular function, cardiac stability and cellular energy metabolism, and abnormalities can affect liver and kidney function assessments. This home-collection service offers accurate laboratory analysis with convenient venous sampling across Dubai, allowing clinicians to evaluate long-term magnesium balance and guide therapy.

This test is useful for detecting hidden magnesium deficiency or monitoring therapy in patients on diuretics, proton pump inhibitors, long-term dialysis, or those with malabsorption, alcoholism, or unexplained muscle cramps and arrhythmias. A trained phlebotomist collects the required blood sample at home (proper tube and handling are important for reliable RBC measurements), and results should be interpreted by a physician given laboratory-specific reference ranges and potential medication interactions. If you are in the UAE, inform your clinician about renal or hepatic conditions and any supplements you take so results are reviewed in the correct clinical context.

• Magnesium — Red Blood Cells (RBC)
• Intracellular magnesium concentration
• RBC magnesium (reported in µmol/L or mmol/L)

• Persistent muscle cramps, weakness or unexplained fatigue
• Cardiac arrhythmias or palpitations requiring metabolic evaluation
• Monitoring patients on diuretics, proton pump inhibitors or long-term antibiotics
• Chronic kidney disease, dialysis patients, or suspected malabsorption
• History of excessive alcohol use or unexplained electrolyte abnormalities

• Accurate assessment of intracellular magnesium status beyond serum testing
• Supports management of liver, kidney and cardiac-related metabolic issues
• Helps guide magnesium supplementation and medication adjustments
• Convenient at-home venous collection across Dubai with certified phlebotomists
• Timely laboratory reporting to your UAE clinician for informed treatment decisions

• At-home venous blood collection by a certified phlebotomist (specific tube handling required)
• No fasting generally required unless instructed by your clinician
• Avoid magnesium supplements for 24–48 hours prior to sampling if clinically safe to do so
• Inform the collector and your physician about all current medications and renal/hepatic conditions