Lithium | KK Women's and Children's Hospital

Specimen Container	Gel separator tube (Adult) Microtube (Paeds)
Specimen Requirement	3mL plain blood
Specimen Storage/Transport	Spin down and separate serum. Sample should be kept refrigerated (2-8°C). Serum should be separated from cells if storage of more than 4 hours. Stability: 7 days
Orderable as Urgent?	No
Turn Around Time	Average: 4 hrs ( 3 - 5 hrs )
Testing Laboratory Location	SGH
Laboratory	Biochemistry
Contact Number	6394 1352
Day and Time Performed	Mon – Fri 0800 hrs– 1700 hrs , Sat 0800 hrs – 1230 hrs
Orderable on CPOE?	Yes
Downtime Form	Clinical Chemistry - Form A
Additional Information	Send specimen to lab for serum separation after normal office hours.

Change History Notes

Last Updated - 21 Jun 2025