Home
HelpTest Code LAB47 Ammonia
Performing Lab
Arnot Ogden Medical Center/ Ira Davenport Memorial Hospital
Ordering Recommendations
Assisting in the diagnosis of hepatic coma.
Investigating and monitoring treatment for inborn errors of metabolism.
Evaluating patients with advanced liver disease.
Collect
Plasma
Collection Device
Lithium Heparin Green Top Tube
Collection Instructions
Sample must be immediately placed on ice after collection. Tube must be kept closed and in a vertical position.
Sample must be tested within 30 minutes of collection.
Specimen Preparation
Patient should not clench fist. Sample must be immediately placed on ice after collection.
Stability (from collection to initiation)
Sample must be tested within 30 minutes of collection.
Storage/Transport Temperature
On Ice
Specimen Volume
5 mL
Minimum Requirements
1 mL
Remarks
TURN AROUND TIME
1 hour
Methodology
Timed Endpoint Absorbance
Start Date
9/13/2017
Last Review Date
6/19/2025
7/3/25 AP