Ammonia
Test Mnemonic
NH3
CPT Codes
- 82140 - QTY (1)
LOINC ®
16362-6
Performing Laboratory
Cleveland Clinic Laboratories
FDA Category
In Vitro Diagnostic
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | EDTA (Lavender) | See note | Centrifuge, aliquot and freeze plasma within 30 minutes of collection into a CCL tube. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | Not Acceptable |
| Refrigerated | After separation from cells: 2 hours |
| Frozen | After separation from cells: 3 days |
Days Performed
Sun - Sat
Turnaround Time
8 hours
Methodology
| Name | Description |
|---|---|
| Enzymatic |
Reference Range
| Ammonia | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Male | Normal | 16 - 60 | umol/L | Female | Normal | 11 - 51 | umol/L |
Special Info
EDTA is only acceptable specimen type. All others will be refused. Collect blood from a stasis-free vein (e.g. no tourniquet) with fist clenching avoided. Smoking should be avoided prior to collection. Tubes should be filled completely and kept tightly stoppered.
Clinical Info
Evaluation of hepatic function