Ammonia, Plasma
0020043
Ordering Recommendation
 
Mnemonic
AMMON
Methodology
Colorimetry
Performed
Sun-Sat
Reported
Within 24 hours  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
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 NameLOINC
0020043Ammonia, Plasma16362-6
* 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.
Aliases
  • NH3
  • Plasma ammonia level