Test name: Magnesium
Order Code: MG
Preferred Specimen: 2mL serum in a Serum Separator Tube (SST or Tiger-top)
CPT Code: 83735
Collection: Allow SST to clot in an upright position for 30 min, then centrifuge sample within 2 hours of collection. Refrigerate.
Special Instructions and Considerations: Hemolysis elevates results depending on the content of the analyte in the lysed erythrocytes.
Transport Temperature: Refrigerated
Specimen Stability: 7 days under room temperature; 7 days refrigerated
Causes for Rejection: Gross hemolysis