Lithium

Message

Lithium samples are commonly drawn approximately 12 hours after the last dose of lithium has been taken.

Test Code

LITH

CPT Codes
80178

Preferred Specimen

SST Serum Separator

Minimum Volume

0.25 mL

Other Acceptable Specimens

Red No Gel

Instructions

Separate from cells within 4 hour of collection

Transport Container

SST Serum Separator

Transport Temperature

Room Temperature

Specimen Stability

Room Temperature: 8 hours; Refrigerated: 24 hours

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Not separated from cells within 4 hours of collection, Gross hemolysis

Methodology
Vitros 7600/3400

Reference Range

Therapeutic Range: 0.6-1.2 mmol/L; Critical Value: >1.5 mmol/L

Clinical Significance

Lithium is used in the treatment of bipolar (manic-depressive) illness. Lithium measurements are used to monitor patient compliance and therapy and to diagnose potential overdose. Symptoms of lithium intoxication include sluggishness, drowsiness, muscle weakness, and ataxia.

Performed By
RFGH Laboratory

Performing Laboratory
RFGH Laboratory

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.