Laboratory Medicine

Test catalogue

Calcium Ionized
Test Name Calcium Ionized
Specimen Type / Requirements Container Type = 1 TR Green or Gold Top (SST) Minimum Testing Volume = 0.5mL Serum or Plasma Preferred Testing Volume = 1mL Serum or Plasma Tube must fill to at least ½ or greater of its vacuum capacity
Specimen Handling Collection Instructions: Ensure both samples and requisition are labeled properly. Fasting sample preferred. Write your initials, date and time of collection on the collection label or requisition. Special Instructions Centrifuge the tube but DO NOT OPEN THE TUBE OR POUR OFF SERUM. Rejection Criteria: Gross hemolysis, unlabeled. Stability: stable for one week unopened. Samples are scanned and stored at 2-8°C for 1 week. Transportation: Send sample to core lab as soon as possible. It is preferred to send specimen in refrigerated temperature if collecting from an external location.

Calcium Ionized

Test Name

Calcium Ionized

Specimen Type / Requirements

Container Type = 1 TR Green or Gold Top (SST)

Minimum Testing Volume = 0.5mL Serum or Plasma

Preferred Testing Volume = 1mL Serum or Plasma

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Ensure both samples and requisition are labeled properly. Fasting sample preferred. Write your initials, date and time of collection on the collection label or requisition.

Special Instructions Centrifuge the tube but DO NOT OPEN THE TUBE OR POUR OFF SERUM.

Rejection Criteria: Gross hemolysis, unlabeled.

Stability: stable for one week unopened. Samples are scanned and stored at 2-8°C for 1 week.

Transportation: Send sample to core lab as soon as possible. It is preferred to send specimen in refrigerated temperature if collecting from an external location.

Reference Value

Age	Normal Range	Abnormality - Critical	Units
0 up to 1 Days	2.17 - 2.74	1.17-1.41	mmol/L
1 Days up to 6 Days	2.32 - 2.64	1.27-1.52	mmol/L
6 Days up to 18 Years	2.15 - 2.55	1.20-1.38	mmol/L
18 Years up to Unspecified	< 0.80 or >1.70	1.15-1.35	mmol/L

Test Code

LAB54

Methodology

Potentiometric

Testing Location

SMH-Biochemistry

Other Information

Last Updated: August 18, 2026