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
Resources