Lever
Lifestyle
- Regular physical activity
- Stress management
- Adequate hydration
Critical Thresholds
Seek immediate emergency care if magnesium < 0.5 mmol/L or > 1.5 mmol/L due to risk of severe neuromuscular and cardiovascular symptoms.
Critical Low0.5 mmol/LCritical High1.5 mmol/L
Blutwerte · Marker
Magnesium
Serum Magnesium · Mg
Elektrolyte
- Einheit:
- mmol/L
- Abbreviation
- Mg2+
The test quantifies the concentration of magnesium ions (Mg2+) in the blood serum.
Reference Ranges
Reference
0.7–1mmol/L
0.5
0.7
0.8
1
1.5
LowNormalHigh
Reference
Optimal
Critical
Unit · mmol/LReference ranges may vary slightly by laboratory and population.
Overview
Übersicht
Magnesium (Mg2+), also referred to as serum magnesium, is a vital electrolyte and the fourth most abundant cation in the human body. It plays a crucial role as a cofactor in over 600 biochemical reactions, including those involved in energy metabolism, neuromuscular function, cardiovascular health, bone integrity, immune defense, and psychological well-being. Researchers have found that magnesium is absorbed in the intestines, stored in bones and soft tissues, and excreted by the kidneys. Total serum magnesium is the most commonly used measurement in laboratory medicine, although it does not always reflect total body magnesium stores. Clinically, magnesium is significant in diagnosing and managing conditions such as hypomagnesemia, which is prevalent in individuals with chronic diseases, inadequate dietary intake, or those on certain medications. Low magnesium levels are associated with hypertension, type 2 diabetes, osteoporosis, migraines, depression, and chronic inflammation. Conversely, adequate magnesium supports cardiometabolic resilience, skeletal strength, and neurological stability. In the context of athletic performance, biohacking, and longevity, magnesium is recognized for its potential to enhance energy metabolism, muscle function, and overall health. Researchers have observed that magnesium deficiency is a modifiable factor that can reduce the burden of chronic diseases and support healthy aging. However, the measurement of serum magnesium has limitations, as it may not accurately reflect intracellular magnesium levels. Factors such as time of day, fasting status, and recent physical activity can influence test results. Additionally, certain medications and comorbid conditions can confound magnesium levels, necessitating careful interpretation of laboratory results.
Klinische Bedeutung
Reduced magnesium levels (hypomagnesemia) can indicate conditions such as hypertension, type 2 diabetes, and osteoporosis. Elevated levels are rare and usually associated with renal failure or excessive intake of magnesium-containing medications.
Dynamics
Trend Interpretation
Rising Values
Progressively rising magnesium levels could indicate renal dysfunction or excessive supplementation. Re-test in 4 weeks if outside the optimal range.
Falling Values
Falling magnesium levels may suggest dietary insufficiency or increased renal or gastrointestinal losses.
Re-test Interval
4 weeks if outside optimal range
Etiology
Causes — High & Low
Cause
Elevated Levels
- Renal failure
- Excessive magnesium supplementation
- Use of magnesium-containing medications
- Dehydration
Cause
Low Levels
- Inadequate dietary intake
- Chronic diseases
- Use of diuretics
- Gastrointestinal losses
- Certain medications (e.g., amphotericin B, aminoglycosides)
Protocol
How to Optimize
Lever
Nutrition
- Increase intake of leafy greens
- Consume nuts and seeds
- Include whole grains in diet
Lever
Supplementation
- Magnesium citrate
- Magnesium glycinate
Note:
Consult a healthcare provider before starting any supplementation, especially if you have underlying health conditions.
Testing Guidelines
✓Fasting Not Required
✓Not Time-Sensitive
Testing Frequency
Annually for healthy adults, more frequently if symptomatic or at risk for deficiency.
Interfering Factors
- Recent intense exercise
- Use of laxatives
- Alcohol consumption
Related Peptides & Hormones
Parathyroid Hormone
hormone or peptideMay affect
Open Research Questions
Current research suggests that the reference ranges for serum magnesium levels and the optimal treatment thresholds for hypomagnesemia remain debated, as evidenced by varying cutoff levels used in clinical practice. Researchers have not yet established standardized diagnostic strategies that effectively identify magnesium deficiency, particularly in patients with comorbid conditions. Additionally, clinical questions regarding the long-term outcomes of magnesium supplementation and its role in preventing specific cardiovascular events remain unanswered.
25 Research Publications
1,019
Total Citations
4
Human/RCT
6.8
Avg. Influence
2025
Latest
Sort
Filter
01Top
#01
Magnesium metabolism in health and disease.
ReviewInfluence25.0
380
Researchers discussed magnesium's vital role in health, noting that deficiency can lead to various health issues. They highlighted the limitations of current testing methods for assessing magnesium status, emphasizing the need for better diagnostic tools.
02Top
#02
Magnesium in clinical medicine.
ReviewInfluence8.0
192
This review highlighted the clinical significance of magnesium deficiency and its implications for various diseases. Researchers observed that improved methods for assessing magnesium status have led to increased interest in its therapeutic potential in clinical settings.
03Top
#03
Hypomagnesemia: a clinical perspective.
ReviewInfluence16.0
154
This review focused on the clinical significance of hypomagnesemia and its management. Researchers found that hypomagnesemia is often under-recognized in clinical practice, and the study provided an overview of evaluation and management strategies for this condition.
04
#04
Chronic magnesium deficiency and human disease; time for reappraisal?
ReviewInfluence3.0
74
This review reappraised chronic magnesium deficiency's association with major health disorders. Researchers found that serum magnesium levels often do not reflect total body magnesium stores, raising questions about the recognition and treatment of deficiency in at-risk populations.
05
#05
Recommendation on an updated standardization of serum magnesium reference ranges.
Rosanoff Andrea, et al. · European journal of nutrition · 2022
ReviewInfluence11.0
67
This study addressed the need for standardization in serum magnesium reference ranges. Researchers found significant variability in current cut-off values for hypomagnesemia, which may lead to underdiagnosis of magnesium deficiency in clinical settings.
Key findings
- 01Researchers observed that only 2 out of 43 institutions used the proposed low cut-off of 0.85 mmol/L to define low magnesium status.
- 02They found that many reference ranges include individuals with chronic latent magnesium deficit, potentially misdiagnosing their magnesium status.
- 03The study highlights the urgent need for standardization to ensure accurate diagnosis and awareness of magnesium-related health risks.
06
#06
Magnesium-to-Calcium Ratio and Mortality from COVID-19.
HumanInfluence4.0
29
Researchers investigated the magnesium-to-calcium ratio in relation to mortality in COVID-19 patients. They found that a ratio ≤0.20 was strongly associated with increased mortality risk. The study highlights the importance of monitoring magnesium levels in critically ill patients.
07
#07
Acquired Disorders of Hypomagnesemia.
ReviewInfluence4.0
25
This review discussed the common occurrence of hypomagnesemia and its clinical manifestations. Researchers found that serum magnesium levels are often a poor indicator of total body magnesium stores. The study provided recommendations for magnesium replacement based on clinical experience due to the lack of clear management data.
08
#08
Improving diagnosis and treatment of hypomagnesemia.
ReviewInfluence5.0
23
This review examined the role of magnesium in the body and the prevalence of hypomagnesemia, particularly in patients with comorbid conditions. Researchers found that total serum magnesium is the most common measurement used, but many patients remain undiagnosed. The study emphasizes the potential of laboratory medicine to improve diagnosis and treatment through better management strategies.
09
#09
Magnesium and healthy aging.
Review
21
This review explored magnesium's potential as a biomarker of aging. Researchers found that while magnesium levels decrease with age, current blood markers are unreliable for assessing magnesium status. The study suggests that alternative methods may be needed for accurate evaluation.
10
#10
[Drug-induced magnesium deficiency].
Review
17
This study explored the impact of drug-induced magnesium deficiency, noting that many medications can lead to hypomagnesemia. Researchers observed that magnesium deficiency is often overlooked in clinical practice, leading to undiagnosed cases. The study highlights the need for better awareness and testing for magnesium levels.
Clinical Trials (3)
3
Total Trials
217
Total Enrolled
Application of Magnesium-rich Artificial Cerebrospinal Fluid in Aneurysmal Subarachnoid Hemorrhage
NCT04358445UNKNOWN
Sponsor
First Affiliated Hospital Xi'an Jiaotong University
Enrollment
70
Started
2020
Primary outcome
Incidence and severity of CVS during and after operation
Aneurysmal Subarachnoid Hemorrhage
Safety, Tolerability, and Efficacy of Saroglitazar Mg 4 mg in Liver Transplant Recipients With Nonalcoholic Fatty Liver Disease (NAFLD)
Sponsor
Zydus Therapeutics Inc.
Enrollment
20
Started
2019
Primary outcome
Number of Participants With Adverse Events Assessed by CTCAE
Liver Transplant; ComplicationsNAFLD
Alcohol: Thiamine and or Magnesium 1
Sponsor
Glasgow Royal Infirmary
Enrollment
127
Started
2016
Primary outcome
Change in Erythrocyte transketolase activity
Alcohol WithdrawalLactic AcidosisVitamin B1 DeficiencyMagnesium DeficiencyWernicke Encephalopathy
Publication Trend
Research publications about Magnesium over time
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