A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

OSMOLALITY

Test Code
LAB107


CPT Codes
83930

Preferred Specimen
Serum collected from a 7mL red top


Minimum Volume
0.3 mL


Transport Temperature
Refrigerate


Methodology
Freezing Point Depression

Setup Schedule
Set Up:Monday thru Friday 10 AM cut off time/STATS DAILY Report Available:Routine 4 hr/ STAT 1hr


Reference Range
Osmolality Serum mOsm/kg   277-297


Clinical Significance
In serum, nonelectrolytes such as glucose and urea, electrolytes present either as free ions or in undissociated form, and even proteins, all contribute to the osmotic pressure of this body fluid. The solutes most often found in excess and responsible for increased osmolality of serum are glucose and urea, for example, in diabetes and uremia. In diabetic persons, ketone bodies may also accumulate and contribute to the osmotic concentration.


Performing Laboratory
GBMC Hematology



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.