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St. John Health System
Lab Catalog


Index:

Osmolality Urine

Order Name OSMO U
Test Number: 3001100
Revision Date 01/23/2015
Test Name Methodology LOINC Code
Osmolality Urine
Freezing Point 2695-5 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 2 mL (1.0) Urine, Random Sterile Urine container Refrigerated
Instructions Fresh random urine collection. No preservative. Keep refrigerated. Specimen stability: Ambient 8 hours. Refrigerated 7 days.
24 hour urine specimen are acceptable but will be reported with comment that reference ranges to not apply.
GENERAL INFORMATION
Testing Schedule Daily 
Expected TAT 1-2 days 
Clinical Use Useful for assessing the concentrating ability of the kidney. 
CPT Code(s) 83935
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Chemistry