Test Code SQ CAIONP, EPIC LAB54 Calcium, Ionized, Plasma

Methodology

Potentiometry

Meriter Laboratories

Submit only 1 of the following specimens:

Preferred:

Specimen must arrive within 15 minutes of draw or <2 hours if kept on ice unopened.

Specimen Type: Whole blood

Container/Tube: Dark-green top (lithium heparin-no gel)
Specimen Volume: 4 mL

Collection Instructions: Keep specimen anaerobic (do not open tube).

Alternate-External Clients:

Specimen Type: Lithium heparin plasma from an unopened PST tube

Container/Tube: Light-green top (lithium heparin gel)

Specimen Volume: 3 mL

Collection Instructions:

1. Centrifuge as soon as possible.

2. Keep specimen anaerobic (do not open tube).

Additional Information: Centrifuged specimen is stable up to 24 hours.

Refrigerated

<4 days: 4.01-5.21 mg/dL

≥4 days-<7 days: 4.61-5.61 mg/dL

≥7 days: 4.51-5.29 mg/dL

Critical values (automatic call-back): ≤3.41 mg/dL or ≥5.61 mg/dL

Ionized Calcium

Monday through Sunday

82330