A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Magnesium, RBC
Test Code623
CPT Codes
83735
Preferred Specimen
0.5 mL packed RBC cells collected in an EDTA (lavender-top) tube or sodium heparin (royal blue-top) tube
Patient Preparation
Patient should refrain from taking vitamins, or mineral herbal supplements for at least one week before sample collection
Minimum Volume
0.2 mL RBCs • 0.5 mL whole blood
Other Acceptable Specimens
1 mL whole blood collected in: EDTA (lavender-top) tube, EDTA (royal blue-top) tube, or sodium heparin (royal blue-top) tube
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.
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
Room temperature: 7 days
Refrigerated: 7 days
Frozen: Unacceptable
Whole blood
Room temperature: 4 days
Refrigerated: 7 days
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received frozen
Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
FDA Status
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.
This test is not available for New York patient testing at med fusion-Lewisville, TX.
Orders for New York patients will be redirected to Quest Diagnostics Nichols Institute-Chantilly, VA for testing.
Setup Schedule
Mon, Thurs
Reference Range
4.0-6.4 mg/dL
Clinical Significance
Magnesium is an essential trace element. Deficiency leads to irritability, neuromuscular abnormalities, cardiac and renal damage. Its salts are used as antacids and cathartics. Excessive amount may cause CNS depression, loss of muscle tone, respiratory and cardiac arrest.
Performing Laboratory
med fusion |
2501 South State Hwy 121, Suite 1100 |
Lewisville, TX 75067-8188 |