OSMOLALITY, 24 HR URINE

Code
800.7100
Name
OSMOLALITY, 24 HR URINE
Category
None
Department
Serology
Start Date
Expiration Date
Synonyms
CPT Codes
83935
Site
Main Lab
Reference Test
ATLAS Test Code

Specimen Information

Type

Urine, 24-Hour

Volume

2.0 ml

Transport Info

Refrigerated
48 Hour stability

Fasting Required?
False
Patient Instructions

Reference Range

300-900 mOsm/kg

Methodology

Freezing Point Depression

Clinical Significance

Evaluate concentrating ability of kidneys; electrolyte and water balance; work up renal disease, inappropriate secretion of antidiuretic hormone, and diabetes insipidus; evaluate dehydration. Useful in urinalysis when patient has had radiopaque materials, has diabetes dehydration. Useful in urinalysis when patient has had radiopaque materials, has diabetes mellitus or other cause of glycosuria or has proteinuria.Evaluate dehydration, amyloidosis.

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