Calcium, Ionized

Overview

  • EPIC Code:
  • LAB54
  • Soft Test Code:
  • CAION
Alternate Names
  • Ca++
  • Free Calcium
  • Ionized Calcium

Specimen Collection & Preparation

Specimen Requirements:

-OR-

3.0 mL Whole Blood Dark Green Top Tube - Li Heparin
Minimum Volume:
0.5 mL Whole Blood in a 3.0 mL Syringe with Heparin or 0.2 mL Whole Blood in a Tuberculin Syringe with Heparin*

* This volume does not allow for repeat testing

Collection Instructions:

Do not uncap specimen


Rejection Criteria:

Collected in microtainer

If cap has been removed at any time prior to testing or using a previously collected specimen. For more information see documentation below.


Transport and Storage:
  • Ambient (18-24°C): 8 Hours

Clinical Interpretation

Reference Range:

4.5 - 5.3 mg/dL


Test Comments:

A tube containing less than 3.0 mL blood exposes the specimen to residual air. Exposure to residual air may affect ionized calcium values. Values obtained on a specimen containing less than 3.0 mL of blood will be reviewed and may be rejected if results are questionable.


Methodology:
  • Ion Selective Electrode (ISE)
Documentation

A tube containing less than 3.0 mL blood exposes the specimen to residual air. Exposure to residual air may affect ionized calcium values. Values obtained on a specimen containing less than 3.0 mL of blood will be reviewed and may be rejected if results are questionable.


Production Schedule

Sites Performed
  • Parkview DeKalb Hospital
  • Parkview Huntington Hospital
  • Parkview Kosciusko Hospital
  • Parkview LaGrange Hospital
  • Parkview Noble Hospital
  • Parkview Randallia Hospital
  • Parkview Regional Medical Center
  • Parkview Southwest
  • Parkview Wabash Hospital
  • Parkview Whitley Hospital
Days Performed
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Departments
  • Chemistry
Turn Around Time

Same Day/1 to 2 days


Stat Eligible

Coding & Compliance

CDM

01420113


CPT Coding

82330


Medical Necessity May Apply