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, Serum

Message
Day(s) Test Set Up: Monday through Sunday


Test Code
OSMS


CPT Codes
83930

Preferred Specimen


1.0 mL serum




Transport Container


Gold Top (SST Tube)




Methodology
Freezing Point Depression

Reference Range
0-15 days: 266-295 mOsmol/kg
16 days-60 yrs: 275-295 mOsmol/kg
>61 years: 280-301 mOsmol/kg


Clinical Significance
Serum osmolality is increased in hypernatremia, hyperglycemia, uremia, ethanol, methanol, or ethylene glycol overdose, and in diabetes insipidus.



Last Updated: January 17, 2011


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.