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Lithium, Serum
Test CodeLI
CPT Codes
80178
Preferred Specimen
1.0 mL serum
Instructions
Draw blood in a red-top (no gel) tube. Spin down. Note: 1. Peak serum concentrations do not correlate with symptons. 2. Serum for a trough level is usually drawn 12 hours after last dose.
Transport Container
Red Top Tube (no gel)
Transport Temperature
Refrigerated.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Lithium Heparin Tubes
Methodology
Colorimetric
Setup Schedule
Monday through Sunday
Reference Range
Therapeutic concentration: 0.6-1.2 mmol/L (trough concentration)
Alarm value: >1.5 mmol/L
Alarm value: >1.5 mmol/L
Clinical Significance
Useful for the treatment of bipolar (manic depressive) illness.
Last Updated: February 12, 2020
