CAI - Specimen: Calcium, Ionized, Serum

Test Catalog

Test Name

Test ID: CAI    
Calcium, Ionized, Serum

Specimen Type Describes the specimen type validated for testing

Serum SST

Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Container/Tube: Serum gel or serum gel Microtainer

Specimen Volume: Full tube

Collection Instructions:

1. Allow blood to clot for 30 minutes.

2. Centrifuge with stopper in place for 7 minutes at 3,000 rpm to ensure that the gel barrier separates the serum and cells.

3. Keep specimen anaerobic (do not transfer).

4. Serum gel tube/Microtainer must be centrifuged within 1 hour of draw time.

Specimen Minimum Volume The amount of sample necessary to provide a clinically relevant result as determined by the Laboratory.

1.75 mL in a 3.5 mL serum gel tube or 1 full serum gel MICROTAINER

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected


Mild OK; Gross reject








Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperatures are also included.

Specimen TypeTemperatureTime
Serum SSTRefrigerated7 days