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MAGNESIUM
MessageChemistry
Test Code
LAB103
CPT Codes
83735
Preferred Specimen
Light green top tube (lithium heparin plasma)
Minimum Volume
Whole blood: 600 uL (one full light-green-top microtainer or two full red-top microtainers).
Serum/plasma: 300 uL.
Serum/plasma: 300 uL.
Other Acceptable Specimens
Gold top (serum separator tube) or Red Top
Instructions
LAB: Serum acceptable. No hemolysis. Hemolyzed specimens can cause falsely elevated results. Separate specimen within 2 hours of collection.
Specimen Stability
Ambient: 1 week
Refrigerated: 1 week
Frozen: 1 month.
Refrigerated: 1 week
Frozen: 1 month.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Grossly hemolyzed specimens
Setup Schedule
Everyday
Report Available
Same day
Reference Range
1.7 - 2.2 mg/dl
Performing Laboratory
HHI/ HHNB
