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22916 Osmolality, Urine

Osmolality, Urine
Test Code: OS-U
Synonyms/Keywords
Urine Osmo​
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
Urine​ Random Urine Container ​ 2 mL​ 0.5 mL​ 0.5 mL​
Collection Processing Instructions
Random and Timed urine collections without preservative are acceptable. If an aliquot from a timed specimen is submitted, the total volume collected must be measured, recorded, and included with the test request.
 
Specimen Stability Information
Specimen Type Temperature Time
​ Urine​ ​Ambient ​3 hours
Refrigerated​ 5 days
Frozen​ 3 months
Rejection Criteria
Urines with a preservative
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Diagnostic Treatment Center​ ​Monday through Sunday ​Less than 2 hours​ ​Freezing-Point Depression​
​Eau ClaireMonday through Sunday​Less than 2 hours​​​Freezing-Point Depression​​
​Flambeau Hospital ​Monday through Sunday ​Less than 2 hours​ ​Freezing-Point Depression​
Marshfield​ Monday through Sunday​ Less than 2 hours​ Freezing-Point Depression​
​NeillsvilleMonday through Sunday​Less than 2 hours​​Freezing-Point Depression​​
​Minocqua​Monday through Sunday​Less than 2 hours​Freezing-Point Depression
Reference Range Information
Performing Location Reference Range
All Performing Sites ​ Random Urines: 50-1200 mOs/kg​
​24 Hour Urines: 500-800 mOs/kg​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
83935​ ​ ​ ​ ​
Synonyms/Keywords
Urine Osmo​
Ordering Applications
Ordering Application Description
​Centricity ​Osmolality-Ur
​Cerner ​Osmolality Urine
COM​​ ​Osmolality - Urine
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
Urine​ Random Urine Container ​ 2 mL​ 0.5 mL​ 0.5 mL​
Collection Processing
Random and Timed urine collections without preservative are acceptable. If an aliquot from a timed specimen is submitted, the total volume collected must be measured, recorded, and included with the test request.
 
Specimen Stability Information
Specimen Type Temperature Time
​ Urine​ ​Ambient ​3 hours
Refrigerated​ 5 days
Frozen​ 3 months
Rejection Criteria
Urines with a preservative
Reference Range Information
Performing Location Reference Range
All Performing Sites ​ Random Urines: 50-1200 mOs/kg​
​24 Hour Urines: 500-800 mOs/kg​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Diagnostic Treatment Center​ ​Monday through Sunday ​Less than 2 hours​ ​Freezing-Point Depression​
​Eau ClaireMonday through Sunday​Less than 2 hours​​​Freezing-Point Depression​​
​Flambeau Hospital ​Monday through Sunday ​Less than 2 hours​ ​Freezing-Point Depression​
Marshfield​ Monday through Sunday​ Less than 2 hours​ Freezing-Point Depression​
​NeillsvilleMonday through Sunday​Less than 2 hours​​Freezing-Point Depression​​
​Minocqua​Monday through Sunday​Less than 2 hours​Freezing-Point Depression
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
83935​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.