Sodium
Label Mnemonic: NA
Epic Lab Code: LAB122
Downtime Form: A-1a General Laboratory Requisition
Chemistry
6240 RCP
356-3527
Specimen(s):
Plasma
Collection Medium:
Plasma Separator Tube 4.5 mL
Alternate Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL whole blood in light green top tube or ONE Microtainer® for pediatric patients.
Rejection Criteria:
Sodium heparin is not acceptable (elevates Na)
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
135-145 mEq/L. Pediatric Reference Ranges: Age Range Units Premature 130-140 mEq/L Critical value: <120 mEq/L and >160 mEq/L
Comments:
This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).
Test Limitations:
Patients over a wide anion gap range demonstrated no significant sodium bias.
Methodology:
Ion Selective Electrode
CPT Code:
84295
 
See also:
Sodium-Other, Body Fluid