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Magnesium - Blood

Source Blood
Mnemonic MG
Specimen Requirements

1 x 3 mL or 4.5 mL light green (mint) top PST tube.  Gold top SST tube also acceptable.

0.2 mL plasma or serum

Minimum Whole Blood Volumes for Microcollections

Specimen Handling
Additional Information
Testing Location Chemistry-ACH, DSC, FMC, PLC, RGH, SHC
Rural: BMSH, CMGH, DDHS, HRH, SDHS, VCH
Testing Frequency Daily
Alternate Name(s)
Reference Interval

0.65 - 1.05 mmol/L

Click here for critical values.