AMMONIA
| Synonyms: | |
| Computer Code: | NH4 |
| Specimen Collection: | 2 mL blood (Preferred-Lavender (EDTA) or Green (Lithium Hepain, Sodium Heparin). NO MICROTAINERS. |
| Minimum Volume: | 1 mL |
| Handling Instructions for Offsite Areas: | Centrifuge immediately. TRANSPORT IMMEDIATELY ON ICE. FROZEN SAMPLES NOT ACCEPTABLE.Sample must be received in lab within 45 minutes. EDTA samples stable 3 hours. Heparin samples stable only 1 hour. |
| Reference Values: | 0-32 UMOL/L Critical Value: > or equal to 250 umol/L |
| Lab Code: | Chemistry |
| Requisition: | SPEC C |
| Test Frequency: | Daily |
| Routine TAT: | 2 hrs |
| Stat TAT: | 60 min |
| CPT Code(s): | 82140 |
| LCD or NCD: | |
| Methodology Used: |
See Addendum XVII |