Magnesium, RBC

CPT: 83735
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Test Details

Use

Evaluate magnesium deficiency

Methodology

Atomic absorption spectrometry (AAS); inductively-coupled plasma/mass spectrometry (ICP/MS)

Reference Interval

4.2−6.8 mg/dL

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

Centrifuge tube within 45 minutes of collection and separate plasma from cells. Discard the plasma. Using the original collection tube, submit only the RBCs to the laboratory.

Storage Instructions

Room temperature

Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x3

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

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The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf