Magnesium, RBC
Test code
CPT code(s)*
Test resources
Please visit our Clinical Education Center to stay informed on any future publications, webinars, or other education opportunities.
Details
Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Assay category
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Alternative name(s)
RBC Magnesium,MG (RBC),MG RBC,MG++ (RBC),RBC MG
Specimen requirements | |
|---|---|
| Patient preparation | Patient should refrain from taking vitamins, or mineral herbal supplements for at least one week before sample collection |
| Preferred specimen(s) | 0.5 mL packed RBC cells collected in an EDTA (lavender-top) tube or sodium heparin (royal blue-top) tube |
| Alternative specimen(s) | 1 mL whole blood collected in: EDTA (lavender-top) tube, EDTA (royal blue-top) tube, or sodium heparin (royal blue-top) tube |
| Minimum volume | 0.2 mL RBCs • 0.5 mL whole blood |
| Collection instructions | Packed RBCs: Centrifuge specimen and discard plasma within two hours of collection. Transfer RBCs to a plastic transfer vial. Whole blood: Do not centrifuge whole blood. |
| Transport container | Trace-element and metal-free transport tube |
| Transport temperature | Refrigerated (cold packs) |
| Specimen stability | Packed RBC cells Room temperature: 7 days Refrigerated: 7 days Frozen: Unacceptable Whole blood Room temperature: 4 days Refrigerated: 7 days Frozen: Unacceptable |
| Reject criteria | Received frozen |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
The tests listed by specialty and category are a select group of tests offered. For a complete list of Quest Diagnostics tests, please adjust the filter options chosen, or refer to our Directory of Services.