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HelpTest Code NA Sodium
Useful For
Sodium measurements are used in the diagnosis and treatment of aldosteronism (excessive secretion of hormone aldosterone), diabetes insipidus, adrenal hypertension, Addison’s disease, dehydration, inappropriate antidiuretic hormone secretion, or other diseases involving electrolyte imbalance.
Synonyms/Keywords
Na, Serum
Specimen Requirements
| Fasting Required | Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|---|
| No | Plasma/Serum | Lithium-heparin Plasma Separator (PST), Serum Separator Tube (SST) | Lithium or Sodium-heparin Green Top (GTT), Red Top Tube (RTT) | 1 mL | 0.3 mL | 0.6 mL whole blood |
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma/Serum | Ambient | 5 days |
| Refrigerate | 7 days | |
| Frozen | 1 year |
Rejection Criteria
Collections with potassium oxalate/sodium fluoride
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| All Performing Sites | 133-144 mmol/L |
| See Critical Value List for list of current critical values | |
Marshfield Labs Performing Department
Marshfield Labs Chemistry
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Chippewa Falls | Monday through Friday | Less than 2 hours | ISE/Beckman AU |
| Weston | Monday through Sunday | Less than 2 hours | ISE/Beckman AU |
| Eau Claire | Monday through Sunday | Less than 2 hours | ISE/Beckman AU |
| Park Falls | Monday through Sunday | Less than 2 hours | ISE/Beckman AU |
| Ladysmith | Monday through Sunday | Less than 2 hours | ISE/Beckman AU |
| Rice Lake | Monday through Sunday | Less than 2 hours | ISE/Beckman AU |
| Marshfield | Monday through Sunday | Less than 2 hours | ISE/Beckman AU |
| Minocqua | Monday through Sunday | Less than 2 hours | ISE/Beckman AU |
| Neillsville | Monday through Sunday | Less than 2 hours | ISE/Beckman AU |
| Stevens Point | Monday through Friday | Less than 2 hours | ISE/Beckman AU |
| Wisconsin Rapids | Monday through Friday | Less than 2 hours | ISE/Beckman AU |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 84295 | 1 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 84295 | 1 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Sodium Level |