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HelpTest Code LAB47 Ammonia, Plasma
Performing Laboratory
Barnes-Jewish Hospital Laboratory
Methodology
Enzymatic/Kinetic (Glutamate Dehydrogenase)
Literature Reference:
Package insert: Ammonia NH3L2 reagent. Roche Corporation, 05/2019.
Specimen Requirements
Hospital Patient:
Specimen Type: Plasma
Container/Tube: Lavender top (EDTA plasma)
Specimen Volume: Full tube
Collection Instructions: Tube must be full.
Additional Information:
1. Place specimen in a container of wet ice and deliver immediately to the laboratory.
2. Specimen must be received in the laboratory within 30 minutes of draw time.
3. Time of collection must be indicated on specimen label or request form.
Non Hospital Patient:
Call Barnes-Jewish Hospital Laboratory Customer Service at 314-362-1470 prior to collection, select option 1 and schedule a MISSION CRITICAL pick-up.
For specimens collected that cannot be delivered to Core Lab within 30 minutes, centrifuge sample within 30 minutes of collection, aliquot 1 mL plasma, and freeze. Transport plasma frozen via courier.
Specimen Type: Plasma
Container/Tube: Lavender top (EDTA plasma)
Specimen Volume: Full tube
Day(s) Test Set Up
Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in the laboratory
Routine: 1 hour after receipt in the laboratory
Test Classification and CPT Coding
82140
Reference Values
< 2 months: </= 90 mcmol/L
2 months-150 years: </= 50 mcmol/L
Literature Reference:
Rifai N, Horvath AR, Wittwer AT eds: Textbook of Clinical Chemistry and Molecular Diagnostics 6th ed: Chapter 61, p. 1348, Elsevier, St. Louis, MO 2018.
Specimen Transport Temperature
Specimen must be transported on ice
Additional Information
For BJH Laboratory Use Only
Analyte Stability:
See Analyte Stability Chart under General Information for a complete list.
Laboratory Processing Instructions:
Test performed in BJH Core Lab. Spin in a refrigerated centrifuge, do not remove VACUTAINER cap. Deliver to the Cobas8000 immediately.
LOINC Code Information
| Name | LOINC Code |
| Ammonia | 16362-6 |