Ammonia (NH3)

 Must be delivered in lab on ice within 15 minutes of collection.

Tube Type

Test ID   LAB47
EPIC Order
CPT Code(s)   82140
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   Deliver directly to laboratory immediately after collection on ice
Specimen Routine: 3 mL blood/green top tube; see Comments for additional specimen information
  micro: 250  µL blood/pediatric green top tube


15 minutes on ice
Separated/Refrigerated-</=3 hrs (plasma)
Frozen: <24 hours (plasma)
Room temperature:  not acceptable

Availability Routine: 24 hrs/day
Turnaround Time   1 hour
Reference Range Normal: 9-33 µmol/L
Must be delivered in lab on ice within 15 minutes of collection.
Specimens not received on ice will be rejected.
--Outreach samples are acceptable if centrifuged within 15 minutes, separated, and the plasma is transferred into a labeled aliquot tube.--The sample must be kept on ice during transport to the laboratory. Contact lab for special handling instructions.
--Sample must be sent to the laboratory STAT.

Reviewed by christopher parker on February 28, 2018

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514