OSMOLALITY, SERUM

Code
800.6999
Name
OSMOLALITY, SERUM
Category
None
Department
Serology
Start Date
Expiration Date
Synonyms
CPT Codes
83930
Site
Main Lab
Reference Test
ATLAS Test Code

Specimen Information

Type

Gold, SST

Volume

2.0 ml

Transport Info

Refrigerated
48 Hour stability

Fasting Required?
False
Patient Instructions

Reference Range

280-301 mOsm/kg

Methodology

Freezing Point Depression

Clinical Significance

Evaluate electrolyte and water balance, hyperosmolar status, and hydration status; evaluate dehydration, acid-base balance; evaluate seizures; clue to alcoholism, methanol toxicity, ethylene glycol ingestion; evaluate antidiuretic hormone function, liver disease, hyperosmolar coma, hypernatremia.

Increased in hyperglycemia, uremia, or alcoholism. Also used in monitoring renal diseases and diabetes

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