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 #

Ammonia

Test Code
NH3


CPT Codes
82140

Preferred Specimen
1.0 mL plasma


Transport Container
Lavender Top Tube


Transport Temperature


Place immediately on ice/Frozen




Methodology
Enzymatic

Reference Range
Male:          16-60 umol/L
Female:     11-51 umol/L


Clinical Significance
 


Ammonia is generated primarily in the gastrointestinal tract by metabolism of nitrogenous compounds. An excess of ammonia can be toxic to the central nervous system. The Krebs-Henseleit urea cycle provides a means of disposal of ammonia by metabolizing ammonia to urea in the liver.
In adults, elevated ammonia levels can aid in diagnosis of liver failure or hepatic encephalopathy from advanced liver diseases such as viral hepatitis or cirrhosis.




 






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.