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OSMOLALITY, URINE 24HR
MessageChemistry
Test Code
LAB5210323
CPT Codes
83935
Preferred Specimen
1 mL (24-hour urine specimen)
Minimum Volume
Urine: 20 uL
Other Acceptable Specimens
Urine Cup/Red Top Tube
Instructions
Mix well and aliquot specimen into red top tube. Centrifuge urine specimen following aliquoting. Specimen should be tested immediately or up to 24 hours of collection.
Transport Container
Urine Cup/Red Top Tube
Specimen Stability
Refrigerated: 24 hours
Room temperature: 24 hours
Room temperature: 24 hours
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Noncompliant samples per specimen labeling, requirements, mislabeled samples, suspect contamination, and/or storage
Methodology
Freezing-Point Thermodynamics
FDA Status
Approved
Report Available
Same day
Reference Range
300 - 900 MOSM/KG
Performing Laboratory
Hoag Newport/ Hoag Irvine
