Elevated urine N-acetylaspartic acid level

What it means

The amount of N-acetylaspartate in the urine, when corrected for urine concentration, is above upper limit of normal. This feature can be measured using gas chromatography-mass spectrometry.

Although NAA concentration is also elevated in the blood and cerebrospinal fluid (CSF) of children with neonatal/infantile (severe) Canavan disease, elevated concentration of NAA in urine is sufficient for diagnosis of affected individuals.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Elevated urinary N-acetylaspartic acid level · N-acetylaspartate high in urine