Stanford Hospital & Clinics and Lucile Packard Children’s Hospital
RESULT
Test Name : Ammonia, Plasma Order Code : NH3
Synonyms: NH3
Specimen Type: Plasma
Container Type: Mint-top gel tube (Lithium heparin) on ice is preferred; green-top tube (Sodium heparin) on ice is acceptable.
Required Volume: 2 mL
Minimum Volume (Pediatric): 1 mL
Methodology: Spectrophotometry
Standard Run Times: 24 Hours per Day
Turnaround Time: 24 hours/next day
Special Handling: No tourniquet should be used. Specimens that will be received in the Lab within 20 minutes may be transported on ice. If transport time is greater than 20 minutes, spin, separate and freeze plasma immediately. Ship frozen.
CPT Codes: 82140
LPCH EPIC Code: LAB47
SHC EPIC Code: LABNH3
Causes For Rejection: Specimens received within 20 minutes not on ice or specimens not frozen. Capillary specimens (heelsticks, fingersticks) are NOT ACCEPTABLE.
Department: Chemistry