Ammonia




Test Mnemonic

NH3

CPT Codes

  • 82140 - QTY (1)

LOINC ®

16362-6

Performing Laboratory

n/a


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLPlasmaEDTA (Lavender) See noteCentrifuge, aliquot and freeze plasma within 30 minutes of collection into a CCL tube.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.5 mL     

Stability

Environmental Condition Description
AmbientNot Acceptable
RefrigeratedAfter separation from cells: 2 hours
FrozenAfter separation from cells: 3 days

Days Performed

Sun - Sat

Turnaround Time

8 hours

Methodology

Name Description
Enzymatic 

Reference Range

Ammonia
Sex Age From Age To Type Range Range Unit
Male      Normal16 - 60umol/L
Female      Normal11 - 51umol/L

Special Info

EDTA is only acceptable specimen type. All others will be refused. Collect blood from a stasis-free vein (e.g. no tourniquet) with fist clenching avoided. Smoking should be avoided prior to collection. Tubes should be filled completely and kept tightly stoppered.

Clinical Info

Evaluation of hepatic function