Plasma Amino Acid Reference Intervals
|
Analyte |
0−30 d (μmol/L) |
31 d−23 m (μmol/L) |
2 y−15 y (μmol/L) |
>15 y (μmol/L) |
|---|---|---|---|---|
|
Alanine (α-alanine) |
121.0−571.0 |
112.5−500.4 |
155.8−597.3 |
124.8−564.2 |
|
β-Alanine |
1.6−11.8 |
1.8−9.0 |
1.2−7.8 |
1.1−9.0 |
|
Alloisoleucine |
0.3−2.0 |
0.3−2.0 |
0.5−2.5 |
0.4−3.2 |
|
α-Aminoadipic acid |
0.0−2.9 |
0.0−2.6 |
0.0−1.9 |
0.0−2.2 |
|
γ-Aminobutyric acid (GABA) |
0.0−0.6 |
0.0−0.8 |
0.0−0.4 |
0.0−0.3 |
|
β-Aminoisobutyric acid |
0.1−9.6 |
0.4−6.4 |
0.3−3.3 |
0.3−4.3 |
|
α-Amino-N-butyric acid |
4.5−31.6 |
3.9−31.7 |
6.2−33.5 |
5.4−34.5 |
|
Arginine |
19.4−171.0 |
25.0−140.7 |
32.7−121.6 |
32.0−150.0 |
|
Argininosuccinic acid |
0.0−3.0 |
0.0−3.0 |
0.0−3.0 |
0.0−3.0 |
|
Asparagine |
20.2−106.6 |
31.4−100.5 |
31.6−100.5 |
29.5−84.5 |
|
Aspartic acid |
1.8−32.3 |
1.6−13.4 |
1.1−8.2 |
0.9−7.4 |
|
Citrulline |
4.7−44.3 |
11.2−48.8 |
12.0−47.3 |
13.7−63.2 |
|
Cystathionine |
0.1−2.1 |
0.0−0.6 |
0.0−0.2 |
0.0−0.7 |
|
Cystine |
6.1−38.7 |
5.4−29.4 |
8.8−36.3 |
13.5−60.2 |
|
Glutamic acid |
38.0−398.9 |
27.0−195.5 |
18.4−142.2 |
18.1−155.9 |
|
Glutamine |
264.0−835.0 |
280.0−779.0 |
330.0−726.0 |
332.0−754.0 |
|
Glycine |
145.6−518.9 |
120.0−365.0 |
129.1−429.7 |
132.0−467.0 |
|
Histidine |
42.9−115.2 |
44.1−106.5 |
49.8−103.8 |
47.2−98.5 |
|
Homocitrulline |
0.0−7.0 |
0.0−1.3 |
0.0−1.2 |
0.0−1.7 |
|
Homocystine |
0.0−0.1 |
0.0−0.1 |
0.0−0.1 |
0.0−0.1 |
|
Hydroxylysine |
0.4−3.0 |
0.3−1.7 |
0.2−1.0 |
0.1−0.8 |
|
Hydroxyproline |
19.0−115.6 |
9.6−71.4 |
8.6−45.2 |
4.7−35.2 |
|
Isoleucine |
19.3−127.4 |
25.2−126.4 |
27.7−110.3 |
27.7−112.8 |
|
Leucine |
44.0−224.5 |
51.1−216.8 |
56.6−193.6 |
54.9−205.0 |
|
Lysine |
83.2−334.2 |
70.4−279.2 |
82.7−239.5 |
94.0−278.0 |
|
Methionine |
13.9−68.7 |
11.6−52.0 |
12.5−40.2 |
12.7−41.1 |
|
Ornithine |
30.5−205.7 |
25.7−131.3 |
27.3−135.6 |
30.5−131.4 |
|
Phenylalanine |
28.5−108.2 |
30.3−103.3 |
31.9−103.4 |
33.6−101.9 |
|
Proline |
84.3−417.0 |
79.9−358.3 |
84.5−365.0 |
84.8−352.5 |
|
Sarcosine |
0.0−4.5 |
0.0−5.4 |
0.0−4.5 |
0.0−4.0 |
|
Serine |
60.6−236.2 |
65.4−205.6 |
60.1−171.9 |
48.7−145.2 |
|
Taurine |
28.7−238.4 |
31.1−139.0 |
33.3−126.0 |
29.2−132.3 |
|
Threonine |
60.7−326.8 |
53.3−262.3 |
55.9−192.6 |
67.8−211.6 |
|
Tryptophan |
20.0−86.0 |
22.2−95.7 |
23.9−99.3 |
23.5−93.0 |
|
Tyrosine |
21.4−186.9 |
26.0−140.2 |
32.2−123.2 |
31.1−118.1 |
|
Valine |
73.5−309.4 |
84.9−345.0 |
110.0−333.9 |
102.6−345.4 |