Cerebrospinal Fluid Amino Acid Reference Intervals
Analyte | 0−30 d (μmol/L) | 31 d−11 m (μmol/L) | 1 y−17 y (μmol/L) | >17 y (μmol/L) |
---|---|---|---|---|
Alanine (α-alanine) | 16.7−82.9 | 17.2−96.0 | 15.6−91.1 | 13.2−132.3 |
β-Alanine | 0.0−1.1 | 0.0−1.2 | 0.0−1.2 | 0.0−2.7 |
γ-Aminobutyric acid (GABA) | 0.0−2.1 | 0.0−5.7 | 0.0−6.2 | 0.0−4.3 |
Arginine | 4.5−50.3 | 8.4−56.3 | 8.8−51.9 | 9.2−54.7 |
Asparagine | 1.4−26.5 | 3.4−22.8 | 2.9−21.9 | 1.7−26.9 |
Aspartic acid | 0.0−17.6 | 0.0−13.3 | 0.0−12.7 | 0.0−14.6 |
Citrulline | 1.0−12.3 | 1.0−12.0 | 0.9−10.4 | 0.7−11.1 |
Cystine | 0.0−4.3 | 0.0−5.2 | 0.0−4.8 | 0.0−13.0 |
Glutamic acid | 1.3−61.3 | 0.0−58.4 | 0.0−104.0 | 0.0−84.0 |
Glutamine | 80.7−1247.3 | 110.8−788.3 | 111.5−846.7 | 131.1−660.1 |
Glycine | 2.7−44.5 | 2.4−39.7 | 2.3−34.1 | 2.3−72.7 |
Histidine | 6.9−61.2 | 7.3−42.4 | 7.5−39.0 | 6.0−38.1 |
Isoleucine | 2.7−26.4 | 2.9−19.7 | 2.3−19.1 | 1.8−26.3 |
Leucine | 6.9−57.3 | 7.0−37.5 | 6.6−38.1 | 5.0−60.7 |
Lysine | 10.7−71.8 | 11.2−60.7 | 10.3−57.4 | 11.5−84.9 |
Methionine | 1.4−20.4 | 1.3−14.7 | 1.2−13.5 | 1.3−14.2 |
Ornithine | 1.7−30.3 | 2.5−33.0 | 1.9−30.2 | 1.9−23.6 |
Phenylalanine | 6.1−55.7 | 5.5−34.9 | 5.7−36.0 | 4.0−46.4 |
Serine | 20.0−130.5 | 22.3−114.4 | 17.5−110.3 | 10.4−57.8 |
Taurine | 3.5−42.9 | 3.9−34.1 | 3.1−31.2 | 2.5−30.2 |
Threonine | 17.2−186.9 | 14.3−128.9 | 11.5−120.2 | 13.2−90.8 |
Tyrosine | 5.8−64.8 | 5.3−46.6 | 4.8−42.9 | 3.6−38.4 |
Valine | 10.5−67.6 | 10.3−55.3 | 8.7−53.3 | 6.8−87.2 |