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Test Code AMON Ammonia

Important Note

Tube must be completely filled and placed on ice

Performing Laboratory

Memorial Hospital Laboratory- Automated Procedures  304-388-5953       
General Hospital Laboratory 304-388-6244
Teays Valley Hospital Laboratory 304-757-1770
Plateau Medical Center Laboratory 304-469-8621
Greenbrier Valley Laboratory 304-647-6060

Specimen Requirements

Plasma- Lavender Top (EDTA) or Dark Green Lithium Heparin 

The collection tube should be immediately placed on ice.

Centrifuge the sample as soon as possible, separate plasma and store on ice until analysis.

Specimen Rejection

  • Improperly labeled, collected, stored, and transported
  • Quantity not sufficient
  • Hemolyzed 
  • Frozen

Storage and Stability

Heparin Plasma  Must be tested immediately
EDTA Plasma Stable for 3 hours at 2-8o C

Frozen samples will not be accepted due to risk of falsely decreased results.

Samples that cannot be transported to the labortory immediately after collection should be collected in EDTA Plasma.

Reference Values

16-53 µmol/L

Methodology

Direct Photometric Enzymatic Assay Memorial, General, Teays, Plateau
Colorimetric  Greenbrier 

Days Test Set Up and Turnaround

Monday through Sunday, Continuously

AM Collection Expected by 9AM same day
Routine Expected within 24 hrs
Stat Expected within 1 hr
Timed Expected results are test dependant

CPT Coding

82140