A vér megnövekedett ammónia szintjének kimutatására, melynek hátterében súlyos májbetegség, veseelégtelenség, vagy bizonyos ritka, genetikailag meghatározott urea-ciklus zavarok állhatnak; viselkedés-és tudatzavarok oki tisztázására; hepatikus enkefalopátia (májkóma) vagy Reye-szindróma kórisméjének felállítására.
Amennyiben egy májbetegnél vagy veseelégtelenségben szenvedő páciensnél tudatzavar vagy kóma alakul ki; gyakori hányás és letargia kialakulásakor újszülötteknél; gyermekeknél, amennyiben egy vírusos megbetegedést (nátha, bárányhimlő) követően 1 héttel nem szűnő hányás és szokatlan aluszékonyság alakul ki.
A kar könyökhajlati vénájából vett vérmintára.
A vérvétel előtt ne dohányozzon.
Aktuális áttekintésben használt források
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