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Ammonia

Test Code
AMMON


Alias/See Also
LAB3000099
NH3


CPT Codes
82140

Preferred Specimen
2.0 mL plasma collected in a lithium heparin plasma separator tube


Patient Preparation
None

Minimum Volume
0.5 mL plasma


Instructions
The collection tube should be completely filled with blood and immediately placed on ice. 


Transport Container
If drawing at a nursing home, outpatient site, or physician's office, sample should be centrifuged, plasma removed, and plasma frozen immediately.  


Transport Temperature
Plasma frozen/on ice


Specimen Stability
24 hours when frozen (<-20oC)


Methodology
Direct enzymatic procedure

Reference Range
 
Sex Age Reference Range
M/F 0 - 1 days 120 - 180 µmol/L
M/F 1 day - 2 weeks 60 - 150 µmol/L
M/F 2 weeks - 150 years 19 - 60 µmol/L


Performing Laboratory
Penn Medicine Lancaster General Health - LGH and WBH



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.