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Test Directory

7310 Lithium

Specimen Type
Specimen Stability
Reference Range
Serum
7 Days, Ambient
7 Days, Refrigerated
2 Months, Frozen
0.6-1.2 mmol/L

Specimen Requirements

Specimen Type: Serum
Container: 1 Red Top Tube
Temperature: Ambient
Preferred Vol: 1.00 mL
Min Vol: 0.50 mL

Method

Spectrophotometry

Schedule

Monday - Saturday

Turn-Around Time

Send-Out

Instructions/Notes

Clinical Utility

Lithium is widely used in the treatment of manic-depressive psychosis. Administered as lithium carbonate, it is completely absorbed by the gastro-intestinal tract. Peak serum levels occur 2 to 4 hours after an oral dose. The half-life in the serum is 48 to 72 hours and it is cleared through the kidneys (excretion parallels that of sodium). Reduced renal function can prolong clearance time.

CPT Codes

80178

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