Calcium, ionised | KK Women's and Children's Hospital

Specimen Container	Adult and paed: Heparinised syringe Neonates: Heparinised capillary tube
Specimen Requirement	Collect blood to mark. Cap syringe. Place this in a biohazard specimen bag. Send immediately to Lab. Invert blood 5 times after blood collection ensures the anticoagulant is well mixed with the blood. This will ensure results are reliable.
Orderable as Urgent?	Yes
Turn Around Time	Average 30 mins ( 25 - 35 mins )
Reference Value(s)	1.15 - 1.33 mmol/L
Testing Laboratory Location	KKH
Laboratory	Clinical Chemistry
Contact Number	6394 1383
Day and Time Performed	Daily, 24 hrs
Orderable on CPOE?	Yes
Downtime Form	Clinical Chemistry - Form A
Additional Information	Critical values: Low: < 0.8 mmol/L High: > 1.6 mmol/L

Change History Notes

Last Updated - 28 May 2025