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Test Code LAB103 Magnesium, Serum

Additional Codes

Mg

Collection:

Specimen: Blood 

Preferred: Lt Green w/ Gel - Li Hep

Acceptable: SST or Red Top

Specimen Volume: 5 mL; Minimum 0.5 mL

 

Pediatric Collection:

One Lt Green w/ Gel - Li Hep, SST, or Red Top microtainer filled to 500 uL.

Stability:

Separate plasma/serum from gel/cells within 4 hours of collection.  Once serum/plasma is separated from cells:

 

Ambient: 8 Hours

Refrigerated (preferred): 1 Week

Frozen: 2 Weeks

 

Turnaround Time (TAT):

STAT: 1 HOUR

Routine: 4 HOURS

Test Availability:

Daily / 24 Hours / Available STAT

Performing Laboratory Section:

Chemistry / UMC MAIN LABORATORY

Reference Interval:

1.6 - 2.6 mg/dL