Evaluate status of existing liver disease. Monitor treatment in patients with inborn errors of metabolism.
Enzymatic
Sun-Sat
Within 24 hours
Green (sodium or lithium heparin). Collect on ice.
Separate plasma from cells and freeze within 15 minutes of draw time. Specimens need to be spun in a refrigerated centrifuge. Transfer 2 mL plasma to an ARUP Standard Transport Tube. (Min: 0.25 mL)
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Serum or blood. Non-frozen specimens. Specimens containing oxalate or citrate
After separation from cells: Ambient: Unacceptable; Refrigerated: 2 hours; Frozen: 3 weeks (do not thaw)
0-14 days: 95 µmol/L or less
15 days-6 years: 68 µmol/L or less
Greater than 6 years: 72 µmol/L or less
FDA
Hotline History
82140
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0020043 | Ammonia, Plasma | 16362-6 |
- NH3
- Plasma ammonia level