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Lithium
Test CodeLAB29
Alias/See Also
Li concentration
CPT Codes
80178
Preferred Specimen
4.5 ml (3 ml minimum) SST (gold), no additive (red) or EDTA (lavender) whole blood
Minimum Volume
1 ml serum or EDTA plasma
Other Acceptable Specimens
Gold SST
Instructions
Serum or EDTA plasma should be separated from cells within 4 hours of collection. After centrifugation, if not in gel barrier tube, pour off serum into an aliquot tube
Transport Temperature
Room Temp.
Specimen Stability
Serum or EDTA plasma should be separated from cells within 4 hours of collection. Separated from cells: 7 days refrigerated
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
High concentrations of ionized calcium; hemolysis, heparinized plasma
Methodology
Ion-Selective Electrode (ISE)
Setup Schedule
Mon- Sun
Reference Range
Therapeutic: 0.5-1.5 mmol/L
Critical: >2.0 mmol/L
Critical: >2.0 mmol/L
Clinical Significance
Lithium is widely used in the treatment of manic depressive psychosis.
Performing Laboratory
Piedmont Athens Regional
