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,Plasma

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


Test Code
NH4


CPT Codes
82140

Preferred Specimen
1.0 mL  Na Heparin plasma


Instructions
Draw blood in a green-top(lithium or sodium heparin tube). Immediately place specimen on ice. Spin down and remove plasma from cells within 15 minutes of draw.  Send 1.0 mL of lithium or sodium heprain plasma on ice.


Transport Container


Green Top Heparin tube (No Gel)




Transport Temperature
Refrigerated (On ice)


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens received at room temperature


Methodology
Colorimetric

Reference Range
9-30 umol/L


Clinical Significance
Ammonia is a waste product of protein catabolism, which is potentially toxic to the central nervous system. Increased levels are found in patients with impaired hepatic function.



Last Updated: July 10, 2018


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.