Test Name
Lithium
Specimen Type & Acceptability
Serum
7 days refrigerated
General Use
Therapeutic drug monitoring of patients taking Lithium.
CPT Code(s)
80178
Special Instructions
Let clot for 10-20 minutes. After the sample is fully clotted, centrifuge the sample. Verify complete separation of cells and serum and refrigerate. Please provide all dosing information, i.e. last dose and time.
Lithium Therapeutic peak level:
- Immediate release: ~0.5 to 3 hours
- Extended-release: 2 to 6 hours
- Solution: 15 to 60 minutes
Container/Tube Type
Volume
0.5 mL Min. vol. = 100 ul
Suggested Tube Types
Description
Typical Volume
Gold Top Serum Separator Tube (SST)
⋜ 5 mL
Tiger Top Serum Separator Tube (SST)
^For larger volume tests
> 5 mL
Red Top Tube (No additive)
⋜ 5 mL
EDTA Whole Blood
3 mL
3.2 % Sodium Citrate Whole Blood
2.7 mL
Lithium Heparin Plasma Separator Tube
⋜ 5 mL