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HelpTest Code LI Lithium
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 |
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Methodology
Colorimetry
Days and Times Performed
24 hrs, TAT 1 day
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
Update
Last updated 11/03/2025
Laboratory Code
LAB29
LOINC Code Information
14334-7