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HelpTest Code ICA Calcium, Ionized
Specimen Requirements
Submit only one of the followings
Preferred
Specimen Type: Whole Blood
Container/Tube: Special heparinised blood gas syringe
Volume: 3.0mL
Minimum Volume: 1.0mL
Collection Instructions: Collect sample in special heparinized blood gas syringe and mix well to prevent clotting. Send sample on ice to the Laboratory immediately.
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Acceptable
Specimen Type: Whole Blood
Container/Tube: Green Top (Li Heparin)
Volume: 4.5mL
Minimum Volume: 0.5mL
Collection Instructions: Send in primary tube, do not aliquot. Send sample on ice to the Laboratory immediately.
Sample Stability
** Preferred temperatures for storage prior to and during shipping to NUH **
| Specimen Type: | Whole Blood |
|---|---|
| Refrigerate: | 4 hours |
| Frozen: | Reject |
Reference Interval
1.15 – 1.30 mmol/L
Days and Times Performed
24 hours, TAT 1 day
Methodology
Ion-Selective Electrode / pH Electrode
Service Code
31022
Update
Last updated 28/07/2023
Updated on Acceptable Specimen requirements's collection instructions and Sample stability
Unacceptable Condition
| Haemolysis | NA |
|---|---|
| Icterus | NA |
| Lipaemic | NA |
| Others | Aliquoted sample |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
The physiologically active form of calcium and a better indicator than total calcium for evaluating calcium metabolism.