Ammonia

Test Code: TD_2020

CPT Code(s): 82140

$21

Test Details

Alternative Name(s)

Nh3

Test Includes

Plasma Ammonia

Methodology

Enzymatic

Rejection Criteria

Hemolysis
Room temperature samples
Refrigerated samples
Samples not separated from cells
Serum
Anticoagulant other than EDTA plasma

Reference Range(s)

Specimen Requirements

Preferred Specimen

EDTA Lavender Top Tube

Minimum Volume

0.5 mL plasma

Sample Stability

3 days frozen

Transport Temperature

Frozen

Collection Instructions

1 mL EDTA plasma. Centrifuge sample and separate plasma
from cells within 30 minutes of collection. Transfer plasma
to a plastic transport tube. Clearly label tube as EDTA
plasma. Freeze. Critical Frozen (CFZ). Smoking should
be avoided prior to sampling. When multiple tests are
ordered, submit separate tube for this test.

Alternative Specimen

None