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Test Code SQ NA, EPIC LAB122 Sodium, Plasma

Methodology

Ion-Selective Electrode (ISE) Indirect

Performing Laboratory

Meriter Laboratories

Specimen Requirements

Specimen Type: Plasma
Container/Tube: Light-green top (lithium heparin gel)
Specimen Volume: 1 mL
Collection Instructions: Avoid hemolysis.

Specimen Transport Temperature

Refrigerated

Reference Values

135-145 mmol/L

Critical values (automatic call-back): ≤120 mmol/L or ≥155 mmol/L

Day(s) Test Set Up

Monday through Sunday

Specimen Requirements Additional Information

Specimen Stability:

Plasma is stable at ambient temperature (15o C-25o C) for 14 days, refrigerated (2o C-8o C) for 14 days, and frozen (≤-20° C) OK

Test Classification and CPT Coding

84295