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Test Code FMAGR Magnesium, Red Blood Cell

Profile Information

Test ID Reporting Name Available Separately Always Performed
Z4363 Magnesium, RBC No Yes
Z4364 Magnesium, Plasma No No

Reporting Name

Magnesium, RBC

Specimen Type

Metal Free EDTA Plasma
RBCS


Specimen Required


Collect whole blood from a metal-free EDTA (royal blue top) tube. Spin down and separate plasma and red blood cells immediately. Ship 2 mL plasma and 2 mL RBC in metal-free tubes, refrigerate.

 

NOTE: Both plasma and RBCs are required for testing.


Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
Metal Free EDTA Plasma Refrigerated (preferred) 5 days
  Ambient  72 hours
RBCS Refrigerated (preferred) 5 days
  Ambient  72 hours

Reject Due To

Hemolysis

Mild reject; Gross reject

Thawing

NA

Lipemia

NA

Icterus

NA

Other

All other collection tubes except Royal blue-top metal free EDTA

Reference Values

3.5 - 7.1 mg/dL

Day(s) and Time(s) Performed

Monday through Sunday

Analytic Time

3 days

Performing Laboratory

Medtox Laboratories, Inc.

CPT Code Information

83735

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FMAGR Magnesium, RBC In Process

 

Result ID Test Result Name Result LOINC Value
Z4363 Magnesium, RBC 26746-8
Z4364 Magnesium, Plasma In Process

Method Name

Inductively Coupled Plasma/Mass Spectrometry (ICP-MS)

Secondary ID

58086