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Test Code MG MAGNESIUM

Additional Codes

LAB103

Performing Laboratory

Porter Hospital Laboratory

Specimen Requirements

Specimen Type: Blood
Container/Tube: Tiger top, serum gel
Also Acceptable: Green top (Lithium Heparin)
Specimen Volume: Full tube, submit 0.6 mL serum
Specimen Minimum Volume: 0.3 mL
Collection Instructions:
1. Send specimen in original tube.
2. If there is a delay in transport of >1 hour, centrifuge tube.
3. Centrifuged samples are stable for:
    • 7 days at 2-8 °C
4.  Sample must be centrifuged within 2 hours of collection

NOTE: Hemolysis affects results. Please submit a non hemolyzed sample.

Specimen Transport Temperature

Refrigerated

Test Classification and CPT Coding

83735

Test Schedule / Analytical Time / Test Priority / Turn Around Time

Daily / 24 Hours / Available STAT / Routine - 4 Hours

                                                        STAT - 60 minutes

Normal Reference Values

0 up to 7 Days   1.2-2.6 mg/dL
7 Days up to 6 Years 1.5-2.4 mg/dL
6 Years up to 18 Years 1.5-2.3 mg/dL
18 Years up to Unspecified 1.7-2.8 mg/dL

Critical Values

≤1.0 or >4.8 mg/dL