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HelpTest Code MG Magnesium, Plasma or Serum
Additional Codes
LAB103
Collection Method
Venous collection
Minimum Volume
0.5ml
Container
Lt Green / Plasma Separator / Lithium Heparin
Acceptable Specimens
Serum:
- Gold Top SST
- Red Top
Plasma:
- Light Geen Top (lithium heparin)
Reference or Target Ranges
| Age | Male | Female |
| 0 - 2 years | 1.6 - 2.7 | 1.6 - 2.7 |
| 3 - 5 years | 1.6 - 2.6 | 1.6 - 2.6 |
| 6 - 8 years | 1.6 - 2.5 | 1.6 - 2.5 |
| 9 - 11 years | 1.6 - 2.4 | 1.6 - 2.4 |
| 12 - 17 years | 1.6 - 2.3 | 1.6 - 2.3 |
| > 17 years | 1.7 - 2.3 | 1.7 - 2.3 |
Reportable Units
mg/dL
Critical Value
≤ 1.0 or ≥ 4.7 mg/dl
Reasons for Rejection
| Hemolysis Threshold | 800 mg/dL |
| Icterus Threshold | 60 mg/dL |
| Lipemia Threshold | 2000 mg/dL |
| Other | QNS, contaminated, improperly Labeled, improper specimen type |
Specimen Stability
| Ambient | 7 days |
| Refrigerated (4°C to 8°C) | 7 days |
| Frozen(-40°C to 0°C) | 1 year |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time | Stat: 1 hour Routine: 4 hours |
| Stat Availability | Yes |
| Performing Bench | CPH Chemistry |
| Methodology/Method Description | Roche Cobas |
CPT Codes
83735
Last review/edit date
March 2024