Magnesium ( Mg ) Quantitative - Serum
Test Code
M01
Also Known As
No data available
Test Parameters Included
No data available
Department
CLINICAL BIOCHEMISTRY
Methodology
Xylidyl Blue (Colorimetry)
The Xylidyl Blue (Colorimetry) method is a common technique for measuring magnesium concentration in serum. This method is based on the principle that magnesium ions (Mg^{2+}) react with the chromogenic agent Xylidyl Blue-I (also known as Xylidyl Blue II) in an alkaline environment to form a colored complex, typically purple. The intensity of this purple color is directly proportional to the concentration of magnesium in the sample. The absorbance of this colored complex is then measured spectrophotometrically, typically at a specific wavelength (e.g., 660 nm or 530 nm, depending on the specific variant of the reagent and reaction conditions). The higher the absorbance, the greater the concentration of magnesium.
This method is widely used in clinical laboratories due to its simplicity, cost-effectiveness, and good sensitivity for routine magnesium measurements.
Sample Required
SERUM (1ML) * Approximately 1 mL of serum is required for this test. Serum is obtained by collecting a blood sample (typically from a vein in the arm) into a plain or gel-separator vacutainer tube, allowing it to clot, and then centrifuging it to separate the serum from the blood cells.
Preparation
Generally, no special preparation is required for a Magnesium Serum test. * Fasting: Fasting is usually not necessary, but your doctor may recommend it if other blood tests requiring fasting are being... Read more
Schedule Report
24 Hours
Emergency Report
Yes
Frequently Asked Questions
No data available
Test Description
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