Electrolytes, 24 Hour Urine
Order Name
ELECT TM U
Test Number: 2025300
Revision Date 05/03/2021
Test Number: 2025300
Revision Date 05/03/2021
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Total Urine Volume
|
3167-4 | |
|
Sodium 24 Hour Urine
|
2956-1 | |
|
Sodium Urine mm/L
|
Ion-Selective Electrode | 21525-1 |
|
Sodium Urine Timed Estimated
|
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|
Creatinine, Urine, mg/dL
|
Kinetic Alkaline Picrate (Jaffe) | 20624-3 |
|
Creatinine Urine Timed Estimated
|
||
|
Creatinine, Urine, 24 Hour
|
2162-6 | |
|
Potassium 24 Hour Urine mm/L
|
Ion-Selective Electrode | 21476-7 |
|
Potassium 24 Hour Urine mm/24hr
|
2829-0 | |
|
Potasium Urine Timed Estimated
|
||
|
Chloride 24 Hour Urine mm/24hr
|
2079-2 | |
|
Chloride Urine Timed Estimated
|
||
|
Chloride 24 Hour Urine mm/L
|
Ion-Selective Electrode | |
|
Hours Collected - Prompt
|
30211-7 | |
|
Volume 24 Urine Prompt
|
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 5 mL (1 mL) | Urine, 24-hour | 24 hour Urine Container | Refrigerated |
| Instructions | Timed urine collection. No preservative. Record number of hours and volume in ml on the specimen container. Keep refrigerated during and after collection.. Specimen stability: Ambient 24hrs, Refrigerated 6 days, Frozen 7 days |
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| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Mon - Fri |
| Expected TAT | 1-2 Days |
| Clinical Use | 24 hour urine electrolyte measurement may aid in the diagnosis of aldosteronism, diabetes insipidus, adrenal hypertension, Addison's disease, syndrome of inappropriate antidiuretic hormone secretion, or other diseases involving electrolyte imbalance. In healthy patients, urinary sodium excretion is a biomarker of dietary sodium intake. |
| CPT Code(s) | 84300, 82436, 84133 (81050 if urine measured by RML) |
| Lab Section | Chemistry |