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Lithium, Urine
Test Code14630
CPT Codes
80375
Preferred Specimen
1 mL urine collected in an acid-washed or trace metal-free plastic urine container
Minimum Volume
0.4 mL
Instructions
Submit urine sample in plastic container (acid-washed or trace metal-free). Avoid exposure to gadolinium-based contrast medium for 48 hours before sample collection.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 30 days
Refrigerated: 30 days
Frozen: 30 days
Refrigerated: 30 days
Frozen: 30 days
Methodology
Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES)
Setup Schedule
Set up: As needed; Report available: 8 days
Reference Range
Normally: Less than 0.03 mEq/L
After lithium treatment, 30 - 70% excreted in 8 hours; 95% excreted in 10 to 15 days
After lithium treatment, 30 - 70% excreted in 8 hours; 95% excreted in 10 to 15 days
