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Denver Genetic Laboratories

N-Acetylaspartic Acid, Quantitative, Serum or Plasma

Clinical Test Information - CHCO Biochemical Genetics Laboratory


CPT Code:



Monday - Friday, 0800 - 1700.

Turnaround Time:

5 - 7 days.

Minimum Volume:

0.5 mL (at least 1.0 mL preferred).

Specimen Handling:

Serum is preferred (red top collection tube).  Centrifuge and separate from cells within one hour of drawing. Freeze serum or plasma.

Interpretive Reference Range:

Normal < 142 ng/mL.


Diagnosis of Canavan disease.


Stable isotope dilution gas chromatography-mass spectrometry (GC/MS).