Test Overview
Test Methodology

Freezing Point

Test Usage

To aid in evaluation of water balance and kidney function.

Reference Range *

300 - 1300 mOsm/kg for random specimens

* 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
OSMOU
MiChart Code
Osmolality, Urine
Synonyms
    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 24 hour urine specimen with no preservative. Aliquot 2 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine is also acceptable.

    Normal Volume
    2 mL aliquot of random or 24 hour urine collection
    Minimum Volume
    0.5 mL aliquot of random or 24 hour urine collection
    Rejection Criteria
    Specimens collected with Acid Preservative are not acceptable.
    Billing
    CPT Code
    83935
    Fee Code
    20741
    LOINC
    2695-5
    NY State Approved
    No