Advanced Diagnostic Laboratories

Collect

Plain red top or SST tube.

Specimen Preparation

Onsite [NJH]: Transport to lab within 1 hour.
Offsite: Separate serum from cells within 2 hours by centrifuge and aliquot into a labeled polypropylene or similar plastic tube.
Preferred volume: 1 mL serum

Pediatric Collection

Minimum volume: 0.15 mL serum

Storage Transport Temp

Offsite: Send frozen serum Priority Overnight via FedEx and in a well insulated container on dry ice.

Stability

Stability after cell separation:  
Serum: 7 days / Urine: 5 days at RT (15-25°C)
Serum: 22 days / Urine: 5 weeks at 2-8°C
Serum: 1 year / Urine: 6 months frozen at ≥ -20°C

Performed

Monday - Friday

Methodology

Ion Selective Electrode

Reported

4 hour routine, 1 hour STAT

Department

Core Lab

Synonyms

Ion Selective Electrode (Calcium, serum);CAX

Reference Interval

Calcium, Serum	Human
	Male	Female
	mg/dL
Newborn - 23 months	9.0-10.9	9.0-10.9
2 years - 15 years	8.9-10.3	8.9-10.3
16+ years	8.1-11.3	8.1-11.3

CPT Code

82310