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HelpTest Code NA Sodium, LAB122
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube:
Preferred: Green-top (lithium heparin) tube-Sodium heparin tube is not acceptable.
Acceptable: Gold-top serum gel tube or plain red-top tube
Minimum Specimen Volume:15 µL plus a dead volume
Stability: Sodium in serum and plasma are stable for at least one week either at room
or refrigerator (2-8ºC) temperature and indefinitely frozen.
Reference Values
|
Age |
Normal Range |
Panic Low |
Panic High |
|
0-30 Days |
136-145 mmol/L |
< 125 mmol/L |
> 150 mmol/L |
|
31 Days+ |
136-145 mmol/L |
< 120 mmol/L |
> 160 mmol/L |
Day(s) Test Set Up
Monday through Sunday
Useful For
Sodium measurements are used in the diagnosis and treatment of aldosteronism (excessive secretion of the hormone aldosterone), diabetes insipidus (chronic excretion of large amount of dilute urine, accompanied by extreme thirst), adrenal hypertension, Addison’s disease (caused by destruction of the adrenal glands), dehydration, inappropriate antidiuretic hormone secretion, or other diseases involving electrolyte imbalance.
Methodology
ISE
Test Classification and CPT Coding
84295
Report Available
STAT within 1 hour of receipt
Routine within 2 hours of receipt