Hyperammonaemia

Last updated: Monday, 13, December, 2010
CausesAppropriate Tests
Ammonium.
Neonatal and paediatric

Transient neonatal hyperammonaemia

Urea cycle defects

  • Ornithine transcarbamylase deficiency
Amino acids - urine (orotic acid).

Lysinuric protein intolerance

Amino acids - urine.

Reye syndrome

Organic acidaemias

Hepatic failure

Adult

Hepatic failure

Portosystemic shunts

Urea cycle defects, especially

  • Mild variants of paediatric forms
  • Type ll citrullinamaemia
Amino acids - urine (orotic acid).