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HelpTest Code LI Lithium
Laboratory Code
LAB29
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0 mL
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs.
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 1 day |
| Refrigerate | 7 days |
| Frozen | 6 months |
Methodology
Colorimetry
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
| 12 hr post dose trough concentration | 1.0 – 1.2 mmol/L |
|---|---|
| Toxic concentration | > 1.5 mmol/L |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Monitoring therapy of patients with bipolar disorders, including recurrent episodes of mania and depression.
Evaluating toxicity.
Service Code
31817
LOINC Code Information
14334-7
Update
Last updated 11/03/2025