Skip to main content

Please note that this is a beta version of our website. Should you encounter any bugs, glitches, lack of functionality or other problems on the website, please let us know immediately so we can rectify these accordingly. Your help in this regard is greatly appreciated! You can email us.

Login to North West London Pathology – consumables service

If you need a new account or you have a query about your order, please telephone the pathology call centre on 0203 313 5353.

If you have forgotten your password you can reset this yourself. Please click here if you have forgotten your password.

Results Line and Enquiries

0203 313 5353

Ammonia

Category Biochemistry
Test background

Impaired metabolism of proteins secondary to a urea-cycle defect (inborn error of metabolism), severe liver disease, a reduction in vascular perfusion of the liver, renal failure and Reye's syndrome all cause the accumulation of toxic levels of ammonia in the blood.

Clinicial Indications

Irritability, tiredness, seizures, respiratory failure, difficulty in breathing and vomiting in neonates/infants Presentation of hepatic encephalopathy-type symptoms

Reference range
0-50 μmol/L Neonates: 0-100 μmol/L
Premature neonates: 0-150 μmol/L
Sample & container required Lithium Heparin (green top) on ice rush to laboratory
Sample volume 0.5 mL
Turnaround time Within 4 hours