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HelpTest Code ROSM Osmolality, Urine
Specimen and Container/Tube
Urine, Random
Rejection Criteria
N/A
Turnaround Time
1 hour
Test Includes
Quantitative determination of osmolality in urine
Specimen Type
Urine, Random
Preferred Volume
0.5 mL
UCMC Collection Instructions
1. Collect without additives or preservatives.
2. Random urine collections only.
3. Transport refrigerated (2-8° C).
STAT Turnaround Time
1 hour
Test Usage
Useful in evaluating increased and decreased urine output.
Critical Results
None
Additional Information
Serum osmolality is often useful to interpret urine
osmolality.
Fee Code
43436
Container/Tube
Sterile Urine Container
Specimen Minimum Volume
0.2 mL
Day(s) Performed
24 hours, 7 days a week including holidays.
STAT DAY(S) AND TIME(S) PERFORMED
Available
CPT
83935
Method Name
Freezing point Depression Osmometry
Reference Values
500 �?? 800 mOsm/Kg
Reject Due To
N/A
Synonyms
N/A
Test Limitations
N/A
Offsite Collection Instructions
1. Collect without additives or preservatives.
2. Random urine collections only.
3. Transport refrigerated (2-8° C).
Stability: Room Temp
8 hours
Stability: Refrigerated
7 days
Pediatric Volume
0.2 mL
Clinical Indications
Useful in evaluating increased and decreased urine output.
Transport Instructions
1. Collect without additives or preservatives.
2. Random urine collections only.
3. Transport refrigerated?�(2-8?� C).
Test Components
Quantitative determination of osmolality in?�urine
Specimen Stability
8 hours
Methodology
Freezing point Depression Osmometry
Synonyms/Key Search Words
N/A