Test Overview
Test Methodology
Freezing Point
Test Usage
Evaluation of electrolyte balance, hyperosmolar status and hydration status
Reference Range *
No established reference range for fluid osmolality samples.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Daily, 24 hours
Analytic Time
2 hours
Soft Order Code
OSMF
MiChart Code
Osmolality, Fluid
Synonyms
- OSMF
Laboratory
Chemical Pathology
Section
Automation
STAT Availability
STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).
Specimen Requirements
Collection Instructions
Collect body fluid in clean container with no preservative (SST or red top tube, Vacutainer® tubes are also acceptable). Refrigerate. Body fluid must be of liquid consistency for analysis. Watery stool sample acceptable.
Alternate Specimen
Stool acceptable, must be of liquid consistency. [4/08]
Normal Volume
0.5 mL fluid
Minimum Volume
0.25 mL fluid
Billing
CPT Code
83930
Fee Code
20740
LOINC
15200-9