Specimen

Serum, Plasma or Blood

Collection Medium:

Minimum:

0.5 mL in Lithium/Sodium Heparin syringe or,
Full draw; any size Lithium/Sodium Heparin green top tube.

Delivery Instructions:

Mix well and place on wet ice.  Keep on ice and deliver to
laboratory immediately.

Testing Schedule:

24 hrs/day, 7 days a week, including holidays.

Analytic Time:

10 minutes (upon receipt in laboratory)

Reference Range:

3.8-5.2 mg/dl for adults;
reference range for neonatal:
     1-5 Days: 4.2-5.9 mg/dl*
*neonatal ref. Values for ionized calcium, .... Scand J Lab Invest,
 1987, 47: 111-117.

Critical Care Critical Value:          <3.2 mg/dl and >5.9 mg/dl

Special Care Nurseries Critical Value: <3.0 mg/dl and >6.5 mg/dl

Methodology:

Ion Selective Electrode

CPT Code:

82330

See Additional Information:
Chemistry Pediatric Reference Ranges
Critical Care Critical Lab Values
Specimens Requiring Immediate Delivery