UCSF Navigation Bar

UCSF Departments of Pathology & Laboratory Medicine Home Page

Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

Internal Resources

ELECTROLYTES, URINE: SODIUM, POTASSIUM, CHLORIDE

Item Value
Available Stat? No
Test code UNA, UK, UCL
Performed by? Chemistry
Sendout? no
Price range $ per analyte ordered
In House Availability 7 days
Principle Sodium, potassium and chloride: ion selective electrodes.
Interpretation The concentration of sodium in the urine may be decreased due to extrarenal salt loss and volume depletion (sweating, failure to rehydrate), in edematous salt retaining states (cirrhosis, congestive heart failure, and pre-renal azotemia). Urinary sodium concentration may be increased in adrenal insufficiency and with inappropriate secretion of ADH. The potassium concentration may be elevated in the urine due to diuretic therapy, aldosteronism and diseases with sodium retention. Chloride may be decreased in metabolic alkalosis.
Collection Instructions Refrigerate during collection. Containers other than the regular urine collection container must be acid-cleaned.
Sample type Urine
Normal range
Sodium 40-220 mmol/24 hours
Potassium 25-125 mmol/24 hours
Chloride 140-250 mmol/24 hours
Synonyms Chloride, Urine;Sodium, Urine;
Stability Urine samples are stable at refrigerator or room temperature for at least 2 weeks. Stable indefinitely when frozen.
References 1. Bayer(TM) Clinical Methods ISE Module B01-4171-51; B01-4173-51 Advia 1650 Operator's Guide. PN 073-5001-09. Last accessed June 2003. Siemens Medical Solutions Diagnostics, Malvern, PA.

2. Bayer(TM) Clinical Methods CO2 (45) B01-4146-01 Advia 1650 Operator's Guide. PN 073-5001-09. Last accessed June 2003. Siemens Medical Solutions Diagnostics, Malvern, PA.
CPT coding 84300, 84133, 82436


Last Updated 8/19/2009 1:21:06 PM
Search Our Test Menu
UCSF home page UCSF home page About UCSF Search UCSF UCSF Medical Center