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Pediatric Drug Lookup
Normal Laboratory Values for Children
NORMAL LABORATORY VALUES FOR CHILDREN
Normal Values
CHEMISTRY
Albumin 0 - 1 y 2.0-4.0 g/dL
1 y to adult 3.5-5.5 g/dL
Ammonia Newborns 90 - 150 mcg/dL
Children 40 - 120 mcg/dL
Adults 18 - 54 mcg/dL
Amylase Newborns 0 - 60 units/L
Adults 30 - 110 units/L
Bilirubin, conjugated, direct Newborns <1.5 mg/dL
1 mo to adult 0 - 0.5 mg/dL
Bilirubin, total 0 - 3 d 2.0-10.0 mg/dL
1 mo to adult 0 - 1.5 mg/dL
Bilirubin, unconjugated, indirect 0.6-10.5 mg/dL
Calcium Newborns 7.0-12.0 mg/dL
0 - 2 y 8.8-11.2 mg/dL
2 y to adult 9.0-11.0 mg/dL
Calcium, ionized, whole blood 4.4-5.4 mg/dL
Carbon dioxide, total 23 - 33 mEq/L
Chloride 95 - 105 mEq/L
Cholesterol Newborns 45 - 170 mg/dL
See following tables for age- and gender-specific values 0 - 1 y 65 - 175 mg/dL
1 - 20 y 120 - 230 mg/dL
Creatinine 0 - 1 y ≤0.6 mg/dL
1 y to adult 0.5-1.5 mg/dL
Glucose Newborns 30 - 90 mg/dL
0 - 2 y 60 - 105 mg/dL
Children to Adults 70 - 110 mg/dL
Iron
Newborns 110 - 270 mcg/dL
Infants 30 - 70 mcg/dL
Children 55 - 120 mcg/dL
Adults 70 - 180 mcg/dL
Iron binding Newborns 59 - 175 mcg/dL
Infants 100 - 400 mcg/dL
Adults 250 - 400 mcg/dL
Lactic acid, lactate 2 - 20 mg/dL
Lead, whole blood <10 mcg/dL
Lipase
Children 20 - 140 units/L
Adults 0 - 190 units/L
Magnesium 1.5-2.5 mEq/L
Osmolality, serum 275 - 296 mOsm/kg
Osmolality, urine 50 - 1400 mOsm/kg
Phosphorus Newborns 4.2-9.0 mg/dL
6 wk to 19 mo 3.8-6.7 mg/dL
19 mo to 3 y 2.9-5.9 mg/dL
3 - 15 y 3.6-5.6 mg/dL
15 y 2.5-5.0 mg/dL
Potassium, plasma Newborns 4.5-7.2 mEq/L
2 d to 3 mo 4.0-6.2 mEq/L
3 mo to 1 y 3.7-5.6 mEq/L
1 - 16 y 3.5-5.0 mEq/L
Protein, total 0 - 2 y 4.2-7.4 g/dL
2 y 6.0-8.0 g/dL
Sodium 136 - 145 mEq/L
Triglycerides Infants 0 - 171 mg/dL
See following tables for age- and gender-specific values Children 20 - 130 mg/dL
Adults 30 - 200 mg/dL
Urea nitrogen, blood 0 - 2 y 4 - 15 mg/dL
2 y to Adult 5 - 20 mg/dL
Uric acid Male 3.0-7.0 mg/dL
Female 2.0-6.0 mg/dL
ENZYMES
Alanine aminotransferase (ALT) (SGPT) 0 - 2 mo 8 - 78 units/L
2 mo 8 - 36 units/L
Alkaline phosphatase (ALKP) Newborns 60 - 130 units/L
*Lack of specific type of classification in either pediatric or adult recommendations.
Serum Lipid Concentrations by Age and Gender
Males (mg/dL) Females (mg/dL)
5 - 9 y 10 - 14 y 15 - 19 y 5 - 9 y 10 - 14 y 15 - 19 y
Total Cholesterol
50th percentile 153 161 152 164 159 157
75th percentile 168 173 168 177 171 176
90th percentile 183 191 183 189 191 198
95th percentile 186 201 191 197 205 208
Triglycerides
50th percentile 48 58 68 57 68 64
75th percentile 58 74 88 74 85 85
90th percentile 70 94 125 103 104 112
95th percentile 85 111 143 120 120 126
LDL-C
50th percentile 90 94 93 98 94 93
75th percentile 103 109 109 115 110 110
90th percentile 117 123 123 125 126 129
95th percentile 129 133 130 140 136 137
HDL
5th percentile 38 37 30 36 37 35
10th percentile 43 40 34 38 40 38
25th percentile 49 46 39 48 45 43
50th percentile 55 55 46 52 52 51
Adapted from American Academy of Pediatrics Committee on Nutrition, “Lipid Screening and Cardiovascular Health in Childhood,” Pediatrics , 2008, 122:(1)198-208.
Thyroid Function Tests
T 4 (thyroxine) 1-7 d 10.1-20.9 mcg/dL
8-14 d 9.8-16.6 mcg/dL
1 mo to 1 y 5.5-16.0 mcg/dL
1 y 4.0-12.0 mcg/dL
FTI 1-3 d 9.3-26.
1-4 wk 7.6-20.
1-4 mo 7.4-17.
4 - 12 mo 5.1-14.
1 - 6 y 5.7-13.
6 y 4.8-14.
T 3 Newborns 100 - 470 ng/dL
1 - 5 y 100 - 260 ng/dL
5 - 10 y 90 - 240 ng/dL
10 y to Adult 70 - 210 ng/dL
T 3 uptake 35%-45%
TSH Cord 3 - 22 micro international units/mL
1 - 3 d <40 micro international units/mL
3 - 7 d <25 micro international units/mL
7 d 0 - 10 micro international units/mL
Hematology Values
Age Hgb (g/dL)
Hct (%)
RBC
(mill/mm^3 )
RDW MCV
(fL)
MCH
(pg)
MCHC
PLTS (x 103 /mm^3 )
0-3 d 15.0-20.0 45-61 4.0-5.9 <18 95-115 31-37 29-37 250-
1-2 wk 12.5-18.5 39-57 3.6-5.5 <17 86-110 28-36 28-38 250-
1-6 mo 10.0-13.0 29-42 3.1-4.3 <16.5 74-96 25-35 30-36 300-
7 mo to 2 y
2-5 y 11.5-13.0 34-39 3.9-5.0 <15 75-87 24-30 31-37 250-
5-8 y 11.5-14.5 35-42 4.0-4.9 <15 77-95 25-33 31-37 250-
13-18 y 12.0-15.2 36-47 4.5-5.1 <14.5 78-96 25-35 31-37 150-
Adult male 13.5-16.5 41-50 4.5-5.5 <14.5 80-100 26-34 31-37 150-
Adult female
WBC and Diff
Age WBC (x 103 /mm^3 )
Segs Bands Lymphs Monos Eosinophils Basophils Atypical Lymphs
No. of NRBCs
0-3 d 9.0-35.0 32- 62
1-2 wk 5.0-20.0 14- 34
1-6 mo 6.0-17.5 13- 33
7 mo to 2 y
2-5 y 5.5-15.5 23- 5-11 35-65 3-6 0-3 0-1 0-8 0
Myelin basic protein <4 ng/mL
Pressure: Initial LP (mm H 2 O)
Newborns 80 - 110 (<110)
Infants/children <200 (lateral recumbent position)
Respiratory movements 5 - 10
Protein
Preterm 65 - 150 mg/dL mean 115
Term 20 - 170 mg/dL mean 90
Children
Ventricular 5 - 15 mg/dL
Cisternal 5 - 25 mg/dL
Lumbar 5 - 40 mg/dL
