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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: 

  1. 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: 

  1. 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

Day(s) and Time(s) Performed

Tues-Sat

Report Available

4 days

CPT Code(s)

83735