Sign in →

Test Code MG Magnesium

Additional Codes

EPIC LAB4140

Clinical Significance

Determination of magnesium is useful in assessing several diseases and conditions. High magnesium is associated with uremia, dehydration, diabetic acidosis, Addison's disease, and increased medicinal intake of magnesium, such as in the treatment of preeclampsia (hypertension induced pregnancy). Low magnesium is associated with malabsorption syndrome, acute pancreatitits, hypoparathyroidism, chronic alcoholism and delirium tremens, chronic glomerulonephritis, aldosteronism, digitalis intoxication, and protracted IV feeding.

 

Source: Beckman Coulter Unicel, MG IFU. REF #445360 12/22/15

Methodology

Timed endpoint method (Beckman Coulter UniCel DxC 660i)

Sample Type

Preferred Sample Type
Light green top - Plasma

 

Acceptable Sample Type(s)
Dark green top - Plasma
Yellow top - Serum
Red top - Serum

Centrifuge: Yes

Specimen Minimum Volume

0.3 mL

Specimen Stability

Temperature Time
Ambient (18-25°C) 8 hours
Refrigerated (2-8°C) (store) 48 hours
Frozen (-15 to -20°C) 1 month

Separate plasma or serum from cells within 2 hours.

Reference Ranges

Normal Range
Non OB Patients 1.7 - 2.4 mg/dL
OB Patients 1.7 - 2.4 mg/dL

 

Critical Values
Non OB  Patients <1.0 or >4.0 mg/dL
OB Patients <1.0 or >6.5 mg/dL

 

Technical Range
0.1 - 14.0 mg/dL

 

Rejection Criteria

Hemolysis 2+ or greater, reject
Icterus N/A
Lipemia 2+ or greater, ultracentrifuge

 

Availability

Performed STAT
24/7 Yes

 

Performing Laboratory

MultiCare Yakima Memorial Hospital Laboratory

Lab Department

Chemistry

CPT Code

83735

LOINC

19123-9 Magnesium [Mass/Vol]