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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.
Update
Last updated 11/03/2025
LOINC Code Information
14334-7
Service Code
31817
Laboratory Code
LAB29