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Test Code:
MG

Order Name:
Magnesium

 
Useful For:
Monitoring preeclampsia patients being treated with magnesium sulfate, although in most cases monitoring clinical signs (respiratory rate and deep tendon reflexes) is adequate and blood magnesium levels are not required
 
Methodology:
Enzymatic
 
AliasesName:
Mg (Magnesium), Blood
 
 
 
Test Code:
MG

Order Name:
Magnesium

 
Collection Specimen Or Container:
Blood/ Plain blood (Red top) 6 mL, 1 tube
 
Specimen Testing Type:
Serum, minimum volume 0.5 mL
 
Sub Mission Container:
Plastic vial
 
Rejection Criteria:
Hemolysis: 1+ or above reject 
 
Specimen Stabillity:
Specimen Type Temperature Time
Serum Refrigerated, 2oC to 8oC 7 days
Frozen, -20o 12 months
 
 
 
Test Code:
MG

Order Name:
Magnesium

 
Method detail:
Enzymatic
 
Schedule:
Tested daily (24 hours)
 
Turnaround Time:
Collected specimen to report within 1.5 hours (90 mins)
 
Performing Location:
Chemistry, Laboratory Department Tel. 13224
 
Specimen Retention Time:
5 days
 
 
 
Test Code:
MG

Order Name:
Magnesium

 
 
Clinical Information:
Magnesium is an essential nutrient which is involved in many biochemical functions. It has a structural role in nucleic acids and ribosomal particles, required as an activator for many enzymes and has a role in energy producing oxidative phosphorylation.
The normal body contains between 21 to 28 g magnesium, more than 50% of which is complexed with calcium and phosphate in bone. Only approximately 1% of the total magnesium is found in the extracellular fluid; hence, it tends to enter and leave cells under the same conditions as potassium. Approximately 35% of plasma magnesium is protein-bound, mainly to albumin, and therefore changes in albumin concentration may affect magnesium.
Hypomagnesemia results in the impairment of neuromuscular function and may develop in severe prolonged diarrhea, malabsorption syndromes, hyperaldosteronism, and diuretic therapy. Hypermagnesemia is seen in renal glomerular failure and diabetic coma.
 
Reference Value:
1.6 – 2.6 mg/dL
 
Interpretation:
Symptoms of magnesium deficiency do not typically appear until low level.
Levels of very high may be life-threatening.
 
Clinical Reference:
  1. Manufacturer’s reagent package insert, Architect® Magnesium, Abbott Laboratories, Abbott Park IL 60064 USA, March 2015.
  2. http://www.mayomedicallaboratories.com (Retrieved: 01 Jan 2019)