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Geisinger Medical Laboratories Test Catalog
SODIUM, 24 HOUR URINE |
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Geisinger Epic Procedure Code: LAB3067
Geisinger Epic ID: 14431
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SPECIMEN COLLECTION |
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Specimen type: |
24-hour urine | |
Preferred collection container: |
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Specimen required: |
5 mL aliquot of urine; minimum 1 mL. | |
Special notes: |
Urine containing preservatives is not acceptable. Mix well. Estimate total collection volume from 24-hour urine container. Remove required aliquot. Record total volume on both aliquot tube and request slip (if applicable). | |
| SPECIMEN PROCESSING |
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Transport temperature: |
Refrigerated. | |
Specimen stability: |
Room temperature/refrigerated: 14 days. | |
Rejection criteria: |
Urine containing preservatives is unacceptable. | |
TEST DETAILS |
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Reference interval: |
Urine sodium: 40-220 mmol/24 hours. | |
CPT code(s): |
84300 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Test includes: |
Sodium - 24-hour urine, 24-hour total volume. | |
Methodology: |
Potentiometric |
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Synonyms: |
NA24
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Clinical significance: |
The excretion of sodium varies with dietary intake. There is a diurnal variation of sodium excretion, with excretion being greater during daytime than during the night. Decreased levels are seen in congestive heart failure, excessive sweating, diarrhea, pyloric obstruction, malabsorption, and primary aldosteronism. Increased levels may be due to increased salt intake, failure of the adrenal glands, diabetic acidosis, salt-losing renal disease, diuretic therapy and water deprivation dehydration. | |
Doctoral Director(s:) |
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM Sheng-Ying (Margaret) Lo, PhD, DABCC |
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| Review Date: | 12/14/2022 | |