Geisinger Medical Laboratories Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  


Geisinger Epic Procedure Code: LAB2792             Geisinger Epic ID: 6880

Specimen type:
Random urine
Preferred collection container:
Specimen required:
5 mL aliquot urine; minimum 5 mL

Transport temperature:
Specimen stability:
Stable 10 days refrigerated.
Rejection criteria:
Stability limits exceeded.

Reference interval:
50 - 1200 mOsm/kg.
CPT code(s):
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.
Freezing Point
Urine osmolality, urine osmo, OSMOU
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    
Review Date: 12/14/2022

Performing Locations

Geisinger Medical Center

Performing laboratory: Stat Lab
Technical Lead: Karen Delp
Frequency: Daily, Monday-Sunday
Performed STAT? Yes

Geisinger Wyoming Valley Medical Center

Performing laboratory: ATL+
Technical Lead: Danielle Mostowski    
Frequency: Daily, all shifts    
Performed STAT? Yes

Geisinger Community Medical Center

Performing laboratory: Hematology
Technical Lead: Robert Furcon  
Frequency: Daily    
Performed STAT? Yes

Geisinger Lewistown Hospital

Performing laboratory: Chemistry
Technical Lead: Jane Kifer  
Frequency: All shifts    
Performed STAT? Yes
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