| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Sodium
MessagePerforming Lab: Central Lab, Hudson, Lakeview, Regions, Sartell, Westfields
Test Code
0126
Alias/See Also
Sunquest; NA
CPT Codes
84295
Preferred Specimen
100 uL Lithium Heparin Plasma (light green-top) tube
Minimum Volume
15 uL (does not include dead volume)
Other Acceptable Specimens
Serum (gold-top, red-top, red/gray-top), Lithium Heparin (light green-top) on ICE
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature: < 2 weeks
Refrigerated: < 2 weeks
Frozen: < 1 year at -20 C
Refrigerated: < 2 weeks
Frozen: < 1 year at -20 C
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis
Methodology
Ion Selective Electrode Diluted (Indirect)
Potentiometric
Setup Schedule
Hospital: Daily
Clinics: Monday - Friday
Clinics: Monday - Friday
Report Available
Same day.
Reference Range
136 - 145 mmol/L
Critical Low (<=16 years): <= 125 mmol/L
Critical Low (> 16 years): <= 120 mmol/L
Critical High (all ages): >= 155 mmol/L
Critical Low (<=16 years): <= 125 mmol/L
Critical Low (> 16 years): <= 120 mmol/L
Critical High (all ages): >= 155 mmol/L
Clinical Significance
Sodium is the major cation of extracellular fluids. The kidneys regulate sodium content of the body. Low sodium levels may be caused by excessive urine loss, diarrhea, Addison’s disease, and renal tubular disease. High sodium levels may occur in severe dehydration, some types of brain injury, diabetic coma, and excessive intake of sodium salts.
