Test Details
Methodology
Atomic absorption spectrometry (AAS); inductively-coupled plasma/mass spectrometry (ICP/MS)
Result Turnaround Time
2 - 4 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
Evaluate magnesium deficiency
Limitations
This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.
Specimen Requirements
Specimen
Red blood cells (RBCs)
Volume
1 mL
Minimum Volume
0.2 mL
Container
Green-top (heparin) tube, lavender-top (EDTA) tube, royal blue-top (EDTA) tube, or tan-top lead-free tube
Collection Instructions
Centrifuge tube as soon as possible and separate plasma from cells. Discard the plasma. Using the original collection tube, submit only the RBCs to the laboratory.
Stability Requirements
Temperature | Period |
|---|---|
Room temperature | 14 days |
Refrigerated | 14 days |
Reference Range
3.7–7.0 mg/dL
Storage Instructions
Room temperature
Causes for Rejection
Serum or plasma specimen
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 080283 | Magnesium, RBC | 26746-8 | 080283 | Magnesium, RBC | mg/dL | 26746-8 |
| Order Code | 080283 | |||||
| Order Code Name | Magnesium, RBC | |||||
| Order Loinc | 26746-8 | |||||
| Result Code | 080283 | |||||
| Result Code Name | Magnesium, RBC | |||||
| UofM | mg/dL | |||||
| Result LOINC | 26746-8 |