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26705 Magnesium, RBC (080283)

Magnesium, RBC (080283)
Test Code: MGRBCSO
Useful For

​Evaluation o​f magnesium deficiency​

Specimen Requirements
Fasting Required
Specimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)

​No
​Whole Blood
​Green-top (heparin) tube, lavender-top (EDTA) tube, royal blue-top (EDTA) tube, or tan-top lead-free tube
​​1mL
​.02mL
​
Collection Processing 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

Specimen Stability Information
Specim​en TypeTemperatureTime
​​RBCs
​Ambient (preferred)
​14 days
​Refrigerated
​14 days
Rejection Criteria

​Serum or plasma specimens
Performing Laboratory Information
Performing LocationAnalytical TimeMethodology/Instrumentation
LabCorp
​3-5 days
​Atomic absirption spectrometry (AAS); inductively-couples plasma/mass spectromety (ICP/MS)
Reference Lab
LabCorp of America
Test Information
This test was developed and its performance characteristics determined by Marshfield Labs.  It has not been cleared or approved by the US Food and Drug Administration.  This test is used for clinical purposes.  It should not be regarded as investigational or for research.
This test was developed and its performance characteristics determined by Marshfield Labs.  It has not been cleared or approved by the US Food and Drug Administration.  This test is used for clinical purposes.  It should not be regarded as investigational or for research.

​​

Reference Range Information
Performing LocationReference Range
LabCorp​
​3.7-7.0 mg/dL
Outreach CPTs
CPTModifier
(if needed)		QuantityDescriptionComments

​83735
​​1​
​​
Classification
This test was developed and its performance characteristics determined by Marshfield Labs.  It has not been cleared or approved by the US Food and Drug Administration.  This test is used for clinical purposes.  It should not be regarded as investigational or for research.
This test was developed and its performance characteristics determined by Marshfield Labs.  It has not been cleared or approved by the US Food and Drug Administration.  This test is used for clinical purposes.  It should not be regarded as investigational or for research.

​​

Ordering Applications
Ordering ApplicationDescription
​Cerner
​Magnesium, RBC (080283)

If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required
Specimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)

​No
​Whole Blood
​Green-top (heparin) tube, lavender-top (EDTA) tube, royal blue-top (EDTA) tube, or tan-top lead-free tube
​​1mL
​.02mL
​
Collection Processing

​
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

Specimen Stability Information
Specim​en TypeTemperatureTime
​​RBCs
​Ambient (preferred)
​14 days
​Refrigerated
​14 days
Rejection Criteria

​Serum or plasma specimens
Useful For

​Evaluation o​f magnesium deficiency​

Reference Range Information
Performing LocationReference Range
LabCorp​
​3.7-7.0 mg/dL
For more information visit:
Performing Laboratory Information
Performing LocationAnalytical TimeMethodology/Instrumentation
LabCorp
​3-5 days
​Atomic absirption spectrometry (AAS); inductively-couples plasma/mass spectromety (ICP/MS)
Reference Lab
LabCorp of America
For billing questions, see Contacts
Outreach CPTs
CPTModifier
(if needed)		QuantityDescriptionComments

​83735
​​1​
​​
Classification
This test was developed and its performance characteristics determined by Marshfield Labs.  It has not been cleared or approved by the US Food and Drug Administration.  This test is used for clinical purposes.  It should not be regarded as investigational or for research.
This test was developed and its performance characteristics determined by Marshfield Labs.  It has not been cleared or approved by the US Food and Drug Administration.  This test is used for clinical purposes.  It should not be regarded as investigational or for research.

​​

For most current information refer to the Marshfield Laboratory online reference manual.