Ammonia (NH3)

Test Code

LAB47

Alias/See Also

1231100222

CPT Codes
82140

Includes

AMMONIA (NH3)

Preferred Specimen

Green Lithium Heparin (Gel separator preferred) COLLECT ON ICE!

Minimum Volume

0.5 mL plasma

Instructions

Clinic Collection: Collect specimen and centrifuge within 2 minutes of collection. Remove plasma to an aliquot and freeze immediately within 10 minutes of collection. Store and Ship Frozen.

Transport Temperature

Frozen

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Specimen NOT on ICE. Specimen collected in Green Sodium Heparin

Methodology
Abbott Alinity

Reference Range

Male/Female
0-14 Days: 55-90 umol/L
14-30 Days: 20-55 umol/L
30 Days-15 Years: 29-57 umol/L
15-18 Years: 13-34 umol/L
Adults: 17-72 umol/L

Performing Laboratory
ARKADELPHIA LABORATORY CONWAY LABORATORY FORT SMITH LABORATORY HEBER SPRINGS LABORATORY LITTLE ROCK LABORATORY NORTH LITTLE ROCK LABORATORY VAN BUREN LABORATORY MALVERN LABORATORY EL DORADO LABORATORY MAGNOLIA LABORATORY DREW COUNTY LABORATORY

Last Updated: August 26, 2026

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.