Age-Related Reference Intervals for Blood Amino Acids in Thai Pediatric Population Measured by Liquid Chromatography Tandem Mass Spectrometry
Table 2
Characteristics of 277 subjects regarding demographic data, anthropometry, and dietary intake (BM = breast milk predominant; C = carbohydrate; P = protein; F = fat).
n
<4 days old
6–12 months
1–3 years
3–6 years
6–12 years
85
43
49
50
50
Demographic Data
Age (month)
0.08 (0.07–0.09)
9 (7–11)
23 (18–28)
44 (40–57)
120 (108–138)
Sex: male, n (%)
43 (51)
20 (47)
21 (43)
24 (48)
34 (68)
Anthropometry, mean (SD)
W/A z-score
−0.5 (0.52)
−0.26 (1.13)
−0.17 (1.13)
−0.33 (1.44)
0.35 (0.47)
W/H z-score
−0.72 (0.78)
0.06 (0.95)
0.11 (1.2)
0.13 (1.37)
−0.19 (0.75)
BMI z-score
−0.73 (0.63)
−0.02 (1)
0.21 (1.2)
0.08 (1.5)
0.2 (1.17)
Dietary data
Energy (Kcal/day)
BM
973 (708–1121)
1049 (854–1402)
1304 (1144–1489)
1230 (1181–1382)
Energy (Kcal/kg/day)
BM
107 (86–130)
98 (80–124)
88 (74–100)
41 (33–48)
Protein (g/day)
BM
24 (15–32)
40 (35–52)
49 (42–56)
50 (40–65)
Protein (g/kg/day)
BM
3 (1.8–3.8)
3.9 (2.8–5.2)
3.2 (2.5–4)
1.7 (1.3–2.2)
C : P : F
BM
50 : 13 : 37
50 : 16 : 34
54 : 16 : 30
50 : 17 : 33
Fasting time (min)
—
120 (30–165)
135 (90–210)
140 (90–190)
≥720
Age: <4 days old; mean age: 58.3 hours. Data were expressed as median (IQR) unless stated otherwise.
