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HelpTest Code NH3M Ammonia, Plasma
Specimen Required
Collection Container/Tube: Lavender top (EDTA)
Specimen Volume: 0.5 mL
Collection Instructions:
1. Specimens should be put on ice immediately after collection.
2. Centrifuge at refrigerated temperature (4° C).
Useful For
Assisting in the diagnosis of hepatic coma
Investigating and monitoring treatment for inborn errors of metabolism
Evaluating patients with advanced liver disease
Method Name
Enzymatic
Reporting Name
Ammonia, PSpecimen Type
Plasma EDTASpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma EDTA | Frozen (preferred) | 72 hours | |
| Refrigerated | 2 hours |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
Males: ≤60 mcmol/L
Females: ≤51 mcmol/L
Performing Laboratory
MCHS- MankatoTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
82140
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| NH3M | Ammonia, P | 16362-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| NH3M | Ammonia, P | 16362-6 |
Day(s) Performed
Monday through Sunday