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]