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Geisinger Medical Laboratories Test Catalog
OSMOLALITY, URINE |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB2792 Geisinger Epic ID: 6880 | |
SPECIMEN COLLECTION |
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Specimen type: |
Random urine | |
Preferred collection container: |
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Specimen required: |
5 mL aliquot urine; minimum 5 mL | |
| SPECIMEN PROCESSING |
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Transport temperature: |
Refrigerated. | |
Specimen stability: |
Stable 10 days refrigerated. | |
Rejection criteria: |
Stability limits exceeded. | |
TEST DETAILS |
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Reference interval: |
50 - 1200 mOsm/kg. | |
CPT code(s): |
83935 | |
| 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. | ||
Methodology: |
Freezing Point |
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Synonyms: |
Urine osmolality, urine osmo, OSMOU
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Clinical significance: |
Urine osmolality measures the amount of osmotically active solute molecules. It is commonly used to investigate low sodium (hyponetremia) and presence of toxins (methanol, ethylene glycol), drug therapies (mannitol, glycine), or metabolic disorders (glucose in diabetes). Urine osmolality is frequently ordered with serum osmolality to evaluate water balance and increased/decreased urine output. Increased urine output may result from diabetes, increased fluid intake, or inappropriate amounts of antidiuretic hormone (ADH). | |
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 | |
Performing Locations
Geisinger Wyoming Valley Medical Center