Magnesium, RBC

Last Modified: 6/17/2019 2:38:41 PM

  Medicare Medical Necessity Restrictions May Apply
Medical Necessity Documentation:  
Client Notes: Contact the Client Response Center at 266-1500 (Option 1) to acquire the  Plasma Trace Element Metal Free Plastic Vial
Patient Preparation: Patient should refrain from taking vitamins, or mineral herbal supplements for at least one week before sample collection.
Specimen Requirements:

0.5 mL Red Blood Cells (RBC's) from a Navy Blue Top Tube -EDTA Trace metal tube  (Purple Striped Label) placed in a Plasma Trace Element Metal Free Plastic Vial

Collection Instructions:
Avoid worksite collection

Carefully clean skin prior to venipuncture.

Draw Navy Blue Top Tube
Centrifuge and separate red blood cells within 2 hours of collection.
Place Red Blood Cells in the chosen special vial
Do not send the Plasma

Minimum Volume: 0.2 mL Packed RBC's
Transport & Storage: Temperature/Stability:

7 days Ambient
7 days Refrigerated

Rejection Criteria: Hemolysis; Frozen
Reference Range:

4.0 - 6.4 mg/dL

Critical Ranges:  
Test Comments:  
Methodology: Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
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.
Custom Panel: No


Turn Around Time: 4 to 5 days
Days Performed: Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed: Quest - Chantilly
PHL Test Code: MAGBR
EPIC Test Code: LAB104
Send Out Test Code: 10551
Alternate Test Names: Mg, RBC
Included Tests:  
CPT Coding: 83735

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