Sign in →

Test Code 250 Ammonia

Additional Codes

ALAB: AMM

PowerChart: Ammonia Level

MA Cerner: Ammonia.

Test Method

Direct Enzyme; Beckman DxC700AU

Specimen Requirement

EDTA plasma on ice is preferred.  Lithium heparin plasma on ice is also acceptable.

 

Additional Specimen Collection Information

Collect blood in a EDTA or lithium heparin, green-top tube and immediately place on wet-ice. Serum and plasma gel tubes are NOT acceptable.The plasma must be separated from the cells within 30 minutes of collection. Transfer the plasma to a tightly capped disposable tube. Plasma aliquots stored on wet-ice are stable for 3 hours. Do not freeze the specimen. Hemolyzed specimens are not acceptable. Lipemic specimens must be cleared prior to analysis.

Performance

Testing is performed Monday through Sunday.

Due to the specimen requirements all tests for ammonia are performed as soon as possible upon arrival at the testing site.

Reference Values

16-60 mcg/dL

CPT Code Information

82140 Chemistry: Ammonia

Useful For

Diagnosis and monitoring treatment of liver, bone, intestinal, and parathyroid diseases.

LOINC Code Information

22763-7 Ammonia [Mass/Volume] In Plasma