Sodium

Label Mnemonic:	NA
Epic code:	LAB122
Downtime form:	Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

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