Ammonia, Plasma
0020043
Ordering Recommendation
Submit With Order
Mnemonic
AMMON
Methodology
Colorimetry
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Green (sodium or lithium heparin). Collect on ice.  
Specimen Preparation
Separate plasma from cells and freeze within 15 minutes of draw time. Specimens need to be spun in a refrigerated centrifuge. Transfer 2 mL plasma to an ARUP Standard Transport Tube. (Min: 0.25 mL)  
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.  
Unacceptable Conditions
Serum or blood. Non-frozen specimens. Specimens containing oxalate or citrate  
Remarks
 
Stability
After separation from cells: Ambient: Unacceptable; Refrigerated: 2 hours; Frozen: 3 weeks (do not thaw)  
Reference Interval
0-14 days: 21-95 µmol/L
15 days-6 years: 16-68 µmol/L
Greater than 6 years: 18-72 µmol/L
Interpretive Data
Note
CPT Code(s)
82140
Components
Component Test Code*Component Chart Name
0020043Ammonia, Plasma
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Cross References
  • NH3
  • Plasma ammonia level