Educational Reference Only
Reference ranges are provided for general educational purposes and may not apply to your situation. Always rely on the ranges reported by your laboratory and the judgment of your healthcare provider.
Reference Range
Adult · Any · Serum
Reference Range
136–145 mEq/L
Critical Values
Critical low: 120 mEq/L
Critical high: 160 mEq/L
Details
- Analyte
- Sodium
- Specimen
- Serum
- Population
- Adult
- Sex
- Any
- Source
- Tietz Textbook of Clinical Chemistry and Molecular Diagnostics; standard clinical laboratory reference intervals.
- Last Verified
- Aug 1, 2026
- Effective Date
- Aug 1, 2026
- Published
- Aug 16, 2026