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Ammonia
MessageSAMPLE MUST BE PLACED ON ICE IMMEDIATELY FOLLOWING COLLECTION. DELIVER IMMEDIATELY TO LAB.
Performed in the Chemistry Laboratory x5820
06.2018
Performed in the Chemistry Laboratory x5820
06.2018
Test Code
NH3
CPT Codes
82140
Preferred Specimen
Plasma from a Lavender Top
Minimum Volume
1 mL
Instructions
Deliver on ice. Specimen must be centrifuged within 15 minutes and analyzed within 30 minutes.
Transport Container
Lavender (EDTA)
Transport Temperature
The specimen must be transported on ice.
Specimen Stability
No Add-On
20 - 25 oC: 30 minutes
2 - 8 oC: 4 hours once the plasma has been separated from the cells
20 - 25 oC: 30 minutes
2 - 8 oC: 4 hours once the plasma has been separated from the cells
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimen Not received on ice.
Methodology
Glutamate Dehydrogenase (Abbott Architect)
Setup Schedule
This assay is performed 24 hours per day, 7 days per week.
It is available as a STAT.
It is available as a STAT.
Reference Range
21 - 95 ug/dL (0 - 1 month old)
18 - 74 ug/dL (1 - 12 months old)
17 - 68 ug/dL (12 months - 14 years old)
16 - 60 ug/dL (> 14 years old)
18 - 74 ug/dL (1 - 12 months old)
17 - 68 ug/dL (12 months - 14 years old)
16 - 60 ug/dL (> 14 years old)
Clinical Significance
This test is used in the diagnosis of hepatic encephalopathy, hepatic coma, hepatic failure, and Reye's syndrome.
