0-19岁常用生化指标的变化（新生儿） Female reference interval Lower limit Upper limit Lower Upper No.of confidence confidence Analyte Age limit limit samples interval interval Creatinine (Jaffe),mg/dL 0 to 14 days 0.42 1.05 158 0320.47 0.97-1.06 15 days to <1 year 0.31 0.53 130 031-0.33 0.51-0.55 1 to <4 years 0.39 055 121 0380.41 0.54-0.55 4 to <7 years 0.44 0.65 146 0.430.45 0.62-0.67 7 to <12 years 0.52 0.69 234 0.52-0.53 0.67-0.71 12 to <15 years 0.57 0.80 184 0.56-0.58 0.80-0.86 15 to <17 years 0.59 0.86 77 0.58-0.61 0.83-0.87 17 to <19 years 0.60 0.88 88 0.590.61 0.86-0.90 Iron,ug/dL 0 to <14 years 16 128 588 15-21 123-138 14 to <19 years 20 162 143 13-31 138-185 Magnesium,mg/dL 0 to 14 days 1.99 3.94 183 180-2.19 3.77-4.11 15 days to <1 year 1.97 3.09 145 185-2.11 3.01-3.21 1 to <19 years 2.09 284 897 2.09-2.11 2.82-2.87 Phosphate,mg/dL 0 to 14 days 5.6 10.5 204 5.45.9 10.2-10.7 15 days to <1 year 48 8.4 144 4.2-5.0 8.1-8.6 1 to <5 years 43 6.8 184 4.04.5 6.5-7.4 5 to <13 years 4.1 5.9 352 4.1-4.2 5.9-6.0 13 to <16 years 3.2 5.5 95 3.0-3.3 5.4-5.7 16 to <19 years 2.9 5.0 187 2.7-3.1 4.9-5.6 Urea,mg/dL 0 to <14 days 2.8 23.0 312 2.5-3.4 21.3-24.9 15 days to <1 year 3.4 16.8 138 3.1-4.2 14.8-17.6 1 to <10 years 9.0 221 406 8.7-9.2 21.3-232 10 to <19 years 7.3 19.0 273 6.4-7.8 17.9-19.6 Uric acid,mg/dL 0 to 14 days 2.8 12.7 193 1.0-3.1 10.7-13.1 15 days to <1 year 1.6 63 149 1.1-1.7 6.0-7.0 1 to <12 years 1.8 4.9 506 1.7-1.9 4.6-5.0 12 to <19 years 2.6 5.9 220 2.2-2.7 5.5-6.1 Clinical Chemistry 58:5 (2012)40种常用生化指标年龄和性别相关的参考区间 0-19岁常用生化指标的变化（新生儿）