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Lithium
Test CodeLI
Preferred Specimen
Serum, 0.5 mL minimum
Instructions
Draw PO 12 hours + 30 minutes post dose. Note: dosage must be stable for at least 96 hours prior to sampling.
Transport Container
Red top or SST
Transport Temperature
Unspun specimen stable for 2 hours at room temp., spun specimen stable for 4 days if refrigerated
Reference Range
See report for normal ranges. Critical Value: >1.5 mmol/L
Clinical Significance
Widely used in the treatment of manic-depressive psychosis