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AMMONIA, PLASMA
Number 230
CPT Code 82140
Alias AMMONIA, PLASMA
Specimen Container Lavender Top
Specimen Type Plasma EDTA
Turn Around Time 
Days Performed 
Reference Range Males: 27-102 ug/dL; Females: 19-87 ug/dL
Alternate Specimen 
Volume 1 mL Plasma
Stability Ambient Not Stable
Stability Refrigerated Not Stable
Stability Frozen 14 Days
Patient Preparation 

Patient should be fasting 12-14 hours to avoid lipemia, which interferes with the test.

Methodology 

Enzymatic

Limitations 

The correlation between blood ammonia levels and hepatic coma is poor. Ammonia determinations are not reliable predictors of impending hepatic coma.

Rejection Criteria 

Hemolysis, specimen not received frozen,anticoagulants other than EDTA, lipemia, whole blood

Additional Instructions 

Plasma must be separated from red blood cells immediately after draw. Whole blood samples will be rejected.

Performing Laboratory Reference Laboratory
TagsNH3, NH4

COVID-19 Testing Guidance

Primex Clinical Laboratories strives to provide clients with quality testing services to better support patient health. With the ongoing pandemic, COVID-19 testing has become high in demand yet testing supplies are limited.

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COVID-19 Testing Guidance

Primex Clinical Laboratories strives to provide clients with quality testing services to better support patient health. With the ongoing pandemic, COVID-19 testing has become high in demand yet testing supplies are limited.

Read More