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Lithium, Serum or Plasma
Test Code3060
Alias/See Also
Li
Preferred Specimen
One 4 mL serum separator tube or green (sodium heparin).
Minimum Volume
1 mL serum or plasma, frozen. (Min: 0.2 mL) Submit specimen in an ARUP Standard Transport Tube.
Transport Temperature
1 mL serum or plasma, frozen. (Min: 0.2 mL) Submit specimen in an ARUP Standard Transport Tube.
Specimen Stability
After separation from cells: Ambient: 8 hours; Refrigerated: 24 hours; Frozen: 6 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens collected in lithium heparin or sodium fluoride/potassium oxalate. Grossly hemolyzed specimens.
Methodology
Reflectance Spectrophotometry
Setup Schedule
Sun-Sat
Report Available
Within 24 hours
Limitations
Specimens are commonly drawn approximately 12 hours after last dose of lithium taken. Allow serum to clot completely at room temperature. Separate serum from cells ASAP.
