Test Code RBCMG Magnesium, RBC
Additional Codes
Epic: LAB104
Quest: 623
Specimen Required
Patient Preparation: Patient should refrain from taking vitamins, or mineral herbal supplements for at least one week before sample collection
Specimen Type: Packed Red Blood Cells (RBCs) (Preferred)
Collection Container/Type
Preferred: Dark Blue EDTA (Metal free)
Acceptable: Lavender top (EDTA)
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions:
- 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.
Specimen Type: Whole Blood (EDTA)
Collection Container/Type
Preferred: Dark Blue EDTA (Metal free)
Acceptable: Lavender top (EDTA)
Specimen Volume: 1 mL
Collection Instructions:
- Do not centrifuge whole blood.
Specimen Minimum Volume
Packed RBCs: 0.2 mL
Whole Blood: 0.5 mL
Specimen Stability
Packed RBC's
Room temperature: 7 days
Refrigerated: 7 days
Frozen: Unacceptable
Whole Blood
Room temperature: 4 days
Refrigerated: 7 days
Frozen: Unacceptable
Reference Range
4.0-6.4 mg/dL
Report Available
4 days
CPT Code(s)
83735
Day(s) Performed
Tues-Sat