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Magnesium
Test CodeLAB103
Alias/See Also
1231100215
CPT Codes
83735
Includes
MAGNESIUM
Preferred Specimen
Green Lithium Heparin tube (Gel separator preferred)
Minimum Volume
0.5 mL plasma
Instructions
CLINIC COLLECTIONS: Collect 0.5 mL plasma in Green Lithium Heparin tube (Gel separator preferred). Must be spun within 2 hours after collection. If no gel separator, plasma must be pulled off cells within 2 hours.
If collecting with AST, ALT, VD25, K+, or LDH, label routes to Gold/SST. Collect 1.0 mL of serum in Gold/SST. Must be spun within 2 hours after collection.
If collecting with AST, ALT, VD25, K+, or LDH, label routes to Gold/SST. Collect 1.0 mL of serum in Gold/SST. Must be spun within 2 hours after collection.
Transport Temperature
Refrigerated
Specimen Stability
Refrigerated (2 to 8°C): 7 days
Freezer (-10°C or colder): 12 months
Freezer (-10°C or colder): 12 months
Methodology
Abbott Alinity
Reference Range
Males/Females:
0-60 Days: 2.520-3.480 mg/dL
60 Days-15 Years: 2.160-2.760 mg/dL
15-18 Years: 2.040-2.880 mg/dL
Adults: 1.560-2.520 mg/dL
0-60 Days: 2.520-3.480 mg/dL
60 Days-15 Years: 2.160-2.760 mg/dL
15-18 Years: 2.040-2.880 mg/dL
Adults: 1.560-2.520 mg/dL
Performing Laboratory
ARKADELPHIA LABORATORY CONWAY LABORATORY FORT SMITH LABORATORY HEBER SPRINGS LABORATORY LITTLE ROCK LABORATORY NORTH LITTLE ROCK LABORATORY STUTTGART LABORATORY VAN BUREN LABORATORY MALVERN LABORATORY EL DORADO LABORATORY MAGNOLIA LABORATORY DREW COUNTY LABORATORY
Last Updated: August 28, 2026
