Type of test Blood

Normal findings

 Adult: 1.3-2.1 mEq/L or 0.65-1.05 mmol/L (SI units)

Child: 1.4-1.7 mEq/L

Newborn: 1.4-2 mEq/L

Possible critical values: < 0.5 mEq/L or > 3 mEq/L

Test explanation and related physiology

Most organ functions also depend on magnesium. It is especially important to monitor magnesium levels in cardiac patients. Low magnesium may increase cardiac irritability and aggravate cardiac arrhythmias. Hypermagnesemia retards neuromuscular conduction and is demonstrated as cardiac conduction slowing (widened PR and Q-T intervals, with wide QRS).

As intracellular elements, potassium, magnesium, and calcium (in order of quantity) are intimately tied together in maintaining a neutral intracellular electrical charge. That is why it is hard to maintain a normal potassium level when a patient has low magnesium blood levels.

Magnesium deficiency occurs in patients who are malnourished. Toxemia of pregnancy is also believed to be associated with reduced magnesium levels. Magnesium testing is used to monitor magnesium replacement therapy.

Increased magnesium levels most commonly are associated with ingestion of magnesium-containing antacids. Because most of the serum magnesium is excreted by the kidneys, chronic renal diseases cause elevated magnesium levels.

Interfering factors

 • Hemolysis should be avoided when collecting this specimen.

* Drugs that increase magnesium levels include aminoglycoside antibiotics, antacids, calcium-containing medications, laxatives, lithium, loop diuretics, and thyroid medication. Drugs that decrease magnesium levels include some antibiotics, diuretics, and insulin.

 Procedure and patient care

• See inside front cover for Routine Blood Testing.

 • Fasting: no

 • Blood tube commonly used: red

Abnormal findings

Increased levels

- Renal insufficiency

- Uncontrolled diabetes

- Addison disease

- Hypothyroidism

- Ingestion of magnesium containing antacids or salts

Decreased levels

- Malnutrition

- Malabsorption

- Hypoparathyroidism

- Alcoholism

- Chronic renal disease

- Diabetic acidosis

اخر الاخبار

اخبار العتبة العباسية المقدسة

العتبة العباسية المقدسة تواصل تنظيم مجالس العزاء الصباحية بذكرى زيارة عاشوراء

مواكب العزاء تستذكر في التاسع من شهر المحرم شهادة عبدالله الرضيع بن الحسين (عليهما السلام)

العتبة العباسية المقدسة تستذكر تضحيات القاسم بن الحسن (عليهما السلام)

شعبة الحرم الشريف تواصل تنفيذ خطتها الخاصة بشهر المحرّم داخل مرقد أبي الفضل العباس (عليه السلام)

المزيد

الآخبار الصحية

لهذا السبب.. إغلاق 25 مركزًا لعلاج الإدمان في مصر ؟

خلافا للاعتقاد الشائع.. علماء يكشفون أسرار بذور البطيخ ؟!

هذا ما يحدث لجسمك عند تناولك الطماطم بانتظام !

تعرف على أطعمة تسرّع "تعافي الجسم" من حروق الشمس

المزيد

الآخبار التكنلوجية

الثلوج تغطي الصحراء الأكثر جفافا في العالم!

بتلسكوب "ألما".. التقاط صورا غير مسبوقة لبدايات الكون !

هل هاتفك مراقب؟.. 5 علامات خطيرة تكشف التجسس عليك

دبي تطلق أول رحلة تجريبية للتاكسي الجوي

المزيد

مواضيع ذات صلة

lyme disease test

luteinizing hormone (LH assay, Lutropin) and follicle stimulating hormone (FSH) assay

liquid biopsy (Fluid biopsy, Fluid phase biopsy)

lipoproteins (High-density lipoproteins [HDLs, HDL-C], Low density lipoproteins [LDLs, LDL-C], Very-low-density lipoproteins [VLDLs], Lipoprotein electrophoresis, Lipoprotein phenotyping, Lipid fractionation, Non-HDL cholesterol, Lipid profile)

lipoprotein-associated phospholipase A2 (Lp-PLA2 PLAC test)

Hemolytic Anemias

Sickle Cell Anemia (Hemoglobinopathy S, Sickle Cell Disease)

Laboratory Diagnosis (Phenotypic) of Thalassemias

Pathophysiological and General Clinical Aspects of β-thalassemias

lipase (Pancreatic lipase, Lipoprotein lipase)

leucine aminopeptidase (LAP)

Legionnaires disease antibody test