Osmolality, Body Fluid (non-urine)

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