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HelpTest Code MG.1 MAGNESIUM
Additional Codes
N.MAGNESIUM
MG.
MAG.
Methodology
Automated Chemistry Analyzer
Specimen Requirements
Serum or Plasma
Container: SST tube or Green top Lithium heparin
Specimen Collection: 1 mL (minimum 0.5 mL)
- Allow specimen to clot completely if a serum tube (SST) was used. Separate serum (SST) or plasma (Lithium Heparin) from cells within 24 hours and transport refrigerated. If red top tube is collected, separate serum from cells within 2 hours and place in separate plastic tube.
- Properly label tube with patient's name, DOB, requisition number and type of tube, i.e. GREEN.
Specimen Transport/Stability
Refrigerated: 24 hours on gel, 7 days poured off
Specimen Rejection
1. Hemolyzed, icteric or lipemic samples
2. Exceeding stability requirements
3. Unlabeled specimen
Maximum Laboratory Time
24 hours
Reference Ranges
| Magnesium | mg/dL |
| 1.6 - 2.6 |
Critical :REFER TO LH-W CRITICAL VALUES POLICY
Day(s) Test Set Up
Daily
Test Classification and CPT Coding
83735