Micronutrient, Magnesium, RBC
Test code
CPT code(s)*
Test resources
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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.
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 red blood cells collected in an EDTA (lavender-top or royal blue-top) tube |
| Alternative specimen(s) | 1 mL whole blood collected in: EDTA (royal blue-top) tube or EDTA (lavender-top) tube |
| Minimum volume | 0.2 mL packed red blood cells • 0.5 mL whole blood |
| Collection instructions | Patients should be 18 years of age or greater. Centrifuge to separate plasma from RBC's and discard plasma. Transfer RBC's to a plastic transfer vial from a Quest Diagnostics (trace element and metal-free) collection kit or transfer to a transport tube. |
| Transport container | Trace element and metal-free transport tube |
| Transport temperature | Refrigerated (cold packs) |
| Specimen stability | Packed red blood cells Room temperature: 30 days Refrigerated: 30 days Frozen: 30 days Whole blood Room temperature: 4 days Refrigerated: 7 days Frozen: Unacceptable |
Reference Range(s)
| ≥18 years | 4.0-6.4 mg/dL |
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.
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