Conventional Range SI Range
Blood, Plasma, Serum
Alanine aminotransferase (ALT), serum <45 U/L [male] <34 U/L [female] 6-40U/L decreasing to adult range in several months <0.77 μkat/L [male] <0.58 μkat/L [female]
Alkaline phosphatase (IFCC at 37oC) 39-117 U/L 0.65-1.95 mmol/L
Amylase, serum Practically no amylase activity is present in neonates; measurable enzyme activity is dectected at approximately 2 months and increases slowly to adult levels by one year. Practically no amylase activity is present in neonates; measurable enzyme activity is dectected at approximately 2 months and increases slowly to adult levels by one year.
Aspartate aminotransferase (AST), serum 20-60 U/L [newborn/infant] .34-1.02 [newborn/infant]
Bilirubin, serum Total <.2 mg/dL [cord, premature or full-term]; 1.0-8.0 [0-1 day premature]; 2.0-6.0 [0-1 day full-term]; 6.0-12.0 [1-2 days premature]; 6.0-10.0 [1-2days full term]; 10.0-14.0 [3-5 days premature]; 4.0-8.0 [3-5 days full term] <34.2 [ cord, premature or full term]; 17-187 [0-1 day premature]; 34-103 [0-1 day full term] 103-205 [1-2 days premature]; 103-171 [1-2 days full term]; 171-240 [3-5 days premature]; 68-137 [3-5 days full term]
Calcium, serum 7-10 mg/dL [premature]; 7.0-12.0 mg/dL [full term]; 8.0-11.0 mg/dL [children]; less than 7 mg/dL or greater than 12.0 mg/dL are panic values. 1.75-2.50 mmol/L [premature]; 1.75-3 mmol/L [full term]; 2-2.75 mmol/L [children]; less than 1.75 mmol/L or greater than 3 mmol/L are panic values.
Cholesterol, serum <170 mg/dL [desirable]; 170-199 mg/dL [borderline high]; >199 mg/dL [high] <4.4 mmol/L [desirable]; 4.40-5.15 mmol/L [borderline high]; >5.15 mmol/L [high]
Cortisol, serum 0800 h: 0.6-1.6 μg/dL // 1600 h: 0.2-0.9 μg/dL [adult]; 17-44 nmol/L // 6-25 nmol/L [adult];
2200 h: 0.7-2.2 μg/dL 2-6 nmol/L
Creatine kinase, serum Up to 10x adult value, depending on trauma at birth [newborn]; 3x adult value [4 days]; adult value [>6 weeks] Up to 10x adult value, depending on trauma at birth [newborn]; 3x adult value [4 days]; adult value [>6 weeks]
Creatinine, serum 0.3-1.0 mg/dL [newborn]; .2-.4 mg/dL [infant]; .3-.7mg/dL  [child]; .5-1.0 mg/dL [asolescent] 26.52-88.4 μmol/L [newborn]; 17.68-35.36 µmol/L [infant]; 26.25-61.88 µmol.L [child]; 44.2-88.4 µmol/L [adolescent]
Electrolytes, serum
Sodium 130-140 mEq/L [premature] 130-140 mmol/L [premature]
Potassium 5.0-10.2 mEq/L [premature, cord]; 3.0-6.0 mEq/L [premature, 48h]; 5.6-12.0 mEq/L [newborn, cord]; 3.7-5.9 mEq/L [newborn]; 4.1-5.3 mEq/L [infant]; 3.4-4.7 mEq/L [child] 5.0-10.2 mmol/L [premature, cord]; 3.0-6.0 mmol/L [premature, 48h]; 5.6-12.0 mmol/L [newborn, cord]; 3.7-5.9 mmol/L [newborn]; 4.1-5.3 mmol/L [infant]; 3.4-4.7 mmol/L [child]
Chloride 96-104 mEq/L [cord]; 95-110 mEq/L [premature]; 98-113 mEq/L [0-30 days] 96-104 mmol/L [cord]; 95-110 mmol/L [premature]; 98-113 mmol/L [0-30 days]
Magnesium 1.5-2.3 mEq/L [newborn]; 1.4-1.9 mEq/L [child] .75-1.15 mmol/L [newborn]; .70-.95 mmol/L [chil]
Ferritin, serum - pediatric 25-200 ng/mL [newborn] 200-600 ng/mL [1 mo] 50-200 ng/mL [2-5 mo] 7-140 ng/mL [6 mo-15 yr] 25-200 µg/L [newborn] 200-600 µg/L [1 mo] 50-200 µg/L [2-5 mo] 7-140 µg/L [6 mo-15 yr]
Follicle-stimulating hormone, serum/plasma - pediatric Male: Male:
Infancy [.1-1.0 yrs] 1.03 +/-1.17 IU/L Infancy [.1-1.0 yrs] 1.03 +/-1.17 IU/L
Tanner I [1.1-9.9 yrs] .97 +/-.59 IU/L Tanner I [1.1-9.9 yrs] .97 +/-.59 IU/L
Tanner I [10-12.1 yrs] 2.52 +/- 1.83 IU/L Tanner I [10-12.1 yrs] 2.52 +/- 1.83 IU/L
Tanner II 9-13.5 yrs] 2.75 +/-1.84 IU/l Tanner II 9-13.5 yrs] 2.75 +/-1.84 IU/l
Tanner III [10.7-16.3 yrs] 2.94 +/-1.55 IU/L Tanner III [10.7-16.3 yrs] 2.94 +/-1.55 IU/L
Tanner IV [11.2-17.8 yrs] 4.47 +/-1.88 IU/L Tanner IV [11.2-17.8 yrs] 4.47 +/-1.88 IU/L
Tanner V [11.7-17.7 yrs] 7.64 +/-2.50 IU/L Tanner V [11.7-17.7 yrs] 7.64 +/-2.50 IU/L
Female: Female:
Infancy [.1-1.0 yrs] 7.27 +/- 4.16 IU/L Infancy [.1-1.0 yrs] 7.27 +/- 4.16 IU/L
Tanner I [1.1-9.9 yrs] 2.16 +/-1.14 IU/L Tanner I [1.1-9.9 yrs] 2.16 +/-1.14 IU/L
Tanner I [10-12.1 yrs] N/A Tanner I [10-12.1 yrs] N/A
Tanner II 9-13.5 yrs] 3.44 +/-1.58 IU/l Tanner II 9-13.5 yrs] 3.44 +/-1.58 IU/l
Tanner III [10.7-16.3 yrs] 4.88 +/-2.11 IU/L Tanner III [10.7-16.3 yrs] 4.88 +/-2.11 IU/L
Tanner IV [11.2-17.8 yrs] 6.19 +/-2.55 IU/L Tanner IV [11.2-17.8 yrs] 6.19 +/-2.55 IU/L
Tanner V [11.7-17.7 yrs] 4.92 +/- 6.63 IU/L Tanner V [11.7-17.7 yrs] 4.92 +/- 6.63 IU/L
Gases, arterial blood (room air)
PO2 16-24 mmHg [fetus]; 8-24 mmHg[birth, umbilical artery]; 33-75 mmHg [5-10min]; 31-85 mmHg [0 min]; 38-83mmHg [60 min]; 55-80 mmHg[after 1h]; 54-95 mmHg [1 day]; 57-94 mmHg[one week] 2.133-3.199 kPa [fetus]; 1.066-3.199 kPa [birth, umbilical artery]; 4.399-9.998 kPa [5-10min]; 4.132-11.331kPa [20 min]; 5.067-11.064 kPa [60 min]; 7.332-10.664 kPa [after 1h]; 7.198-12.664 kPa [1 day]; 7.598-12.530 kPa [one week]
Glucose, serum - pediatric 45-96 mg/dL [cord]; 20-60 mg/dL [premature]; 30-60 mg/dL [neonate]; 40-60 mg/dL [1 day]; 50-80 mg/dL [>1 day]; 60-100 mg/dL [child] 2.5-5.3 mmol/L [cord]; 1.1-3.3 mmol/L [premature]; 1.7-3.3 mmol/L [neonate]; 2.2-3.3 mmol/L [1 day]; 2.8-3.5 mmol/L [>1 day]; 3.3-5.6 mmol/L [child]
Immunoglobulins, serum
IgA all units mg/dL: 2+/-3 [newborn]; 21+/-13 [1-3 mos]; 28+/-18 [4-6 mos]; 37+/-18 [7-12 mos]; 50+/-24 [13-24 mos]; 71+/-37 [25-36 mos]; 93+/-27 [3-5 yrs]; 124+/-45 [6-8 yrs]; 131+/-60 [9-11 yrs]; 148+/-63 [12-16 yrs] all units g/L:.0 2+/-.03 [newborn]; .21+/-.13 [1-3 mos]; .28+/-.18 [4-6 mos]; .37+/-.18 [7-12 mos]; .50+/-.24 [13-24 mos]; .71+/-.37 [25-36 mos]; .93+/-.27 [3-5 yrs]; 1.24+/-.45 [6-8 yrs]; 1.31+/-.60 [9-11 yrs]; 1.48+/-.63 [12-16 yrs]
IgE - please note: pediatrics values are given in different units than adult values above. 1 KU/L [newborn]; 2 KU/L [6 mos]; 3 KU/L [1 yr]; 6 KU/L [2 yrs]; 8 KU/L [3 yrs]; 10 KU/L [4 yrs]; 12 KU/L [5 yrs]; 16 KU/L [6 yrs]; 18 KU/L [7 yrs]; 20 KU/L [8 yrs]; 22 KU/L [9 yrs] 1 KU/L [newborn]; 2 KU/L [6 mos]; 3 KU/L [1 yr]; 6 KU/L [2 yrs]; 8 KU/L [3 yrs]; 10 KU/L [4 yrs]; 12 KU/L [5 yrs]; 16 KU/L [6 yrs]; 18 KU/L [7 yrs]; 20 KU/L [8 yrs]; 22 KU/L [9 yrs]
IgG all units mg/dL: 1031+/-200 [newborn]; 430+/-119 [1-3 mos]; 427+/-186 [4-6 mos]; 661+/-219 [7-12 mos]; 762+/-209 [13-24 mos]; 892+/-183 [25-36 mos]; 929+/-228 [3-5 yrs]; 923+/-256 [6-8 yrs]; 1124+/-235 [9-11 yrs]; 946+/-124 [12-16 yrs] all units g/L: 10.31+/-2.00 [newborn]; 4.30+/-1.19 [1-3 mos]; 4.27+/-1.86 [4-6 mos]; 6.61+/-2.19 [7-12 mos]; 7.62+/-2.09 [13-24 mos]; 8.92+/-1.83 [25-36 mos]; 9.29+/-2.28 [3-5 yrs]; 9.23+/-2.56 [6-8 yrs]; 11.24+/-2.35 [9-11 yrs]; 9.46+/-1.24 [12-16 yrs]
IgM all untis mg/dL: 11+/-5 [newborn]; 30+/-11 [1-3 mos.]; 43+/-17 [4-6 mos]; 54+/-23 [7-12 mos.]; 54+/-23 [13-24 mos]; 61-19 [25-36 mos.]; 56+/-18 [3-5yrs]; 65+/-25 [6-8 yrs] 79+/-33 [9-11 yrs]; 59-20+/- [12-16 yrs] all units g/L: .11+/-.05 [newborn]; .30+/-.11 [1-3 mos.]; .43+/-.17 [4-6 mos]; .54+/-.23 [7-12 mos.]; .54+/-.23 [13-24 mos.]; .61-.19 [25-36 mos.]; .56+/-.18 [3-5yrs]; .65+/-.25 [6-8 yrs] .79+/-.33 [9-11 yrs]; .59-.20+/- [12-16 yrs]
Iron 30-120 µg/dL [newborn]; 40-100 µg/dL [infant]; 50-120 µg/dL [child] 5.37-21.49µmol/L  [newborn]; 7.16-17.91 µmol/L [infant]; 8.96-21.49 µmol/L [child]
Lactate dehydrogenase, serum 125-220 U/L 2.1-3.7 µkat/L
Lipase, serum 7-60 U/L 0.12-1.00 μkat/L
Luteinizing hormone, serum/plasma male: male:
infant: (.1-1.0): 1.6+/-3.22 mIU/mL infant: (.1-1.0): 1.6+/-3.22 IU/L
Tanner I: (1.1-9.9) .05+/- 0.5 mIU/mL Tanner I: (1.1-9.9) .05+/- 0.5 IU/L
Tanner I: (10-12.1) 0.7-.97 mIU/mL Tanner I: (10-12.1) 0.7-.97 IU/L
Tanner II: (9-13.5) 1.8+/-1.3 mIU/mL Tanner II: (9-13.5) 1.8+/-1.3 IU/L
Tanner III: (10.7-16.3) 1.86+/-1.41mIU/mL Tanner III: (10.7-16.3) 1.86+/-1.41IU/L
Tanner IV: (11.2-17.8) 2.65+/-1.81 mIU/mL Tanner IV: (11.2-17.8) 2.65+/-1.81 IU/L
Tanner V: (11.2-17.7) 2.76+/-1.12 mIU/mL Tanner V: (11.2-17.7) 2.76+/-1.12 IU/L
female: female:
infant: (.1-1.0): .16+/-.25 mIU/mL infant: (.1-1.0): .16+/-.25 IU/L
Tanner I: (1.1-9.9) n/a Tanner I: (1.1-9.9) n/a
Tanner I: (10-12.1) .03+/-.03 mIU/mL Tanner I: (10-12.1) .03+/-.03 IU/L
Tanner II: (9-13.5) .71+/-1.04 mIU/mL Tanner II: (9-13.5) .71+/-1.04 IU/L
Tanner III: (10.7-16.3) 2.1+/-2.33 mIU/mL Tanner III: (10.7-16.3) 2.1+/-2.33 IU/L
Tanner IV: (11.2-17.8) 3.67+/-2.22 mIU/mL Tanner IV: (11.2-17.8) 3.67+/-2.22 IU/L
Tanner V: (11.2-17.7) 2.88+/-2.68 mIU/mL Tanner V: (11.2-17.7) 2.88+/-2.68 IU/L
Phosphorus (inorganic), serum 4.2-9.0 mg/dL [newborn]; 3.2-6.3 mg/dL [child] 1.36-2.91 mmol/L [newborn]; 1.03-2.1 mmol/L [child]
Proteins, serum
Total 4.3-7.6 g/dL [premature]; 4.6-7.6 g/dL [newborn]; 6.2-8.0 g/dL [child] 43-76 g/L [premature]; 46-76 g/L [newborn]; 62-80 g/L [child]
Albumin 2.8-4.4 g/dL [0-4d]; 3.8-5.4 g/dL [4d-14y]; 3.2-4.5 g/dL [14-18y] 28-44 g/L [0-4d]; 38-54 g/L [4d-14y]; 32-45 g/L [14-18y]
C-reactive protein (CRP) 0.08-3.1 mg/L 0.76-28.5 nmol/L
Thyroid-stimulating hormone, serum or plasma .7-27 µIU/L [premature]; 2.3-13.2 µIU/L [cord >37wk]; 1.0-39 µIU/L [0-4d]; 1.7-9.1 µIU/L [2-20wk]; .7-64.0 µIU/L [21wk-20y] .7-27 µIU/L [premature]; 2.3-13.2 µIU/L [cord >37wk]; 1.0-39 µIU/L [0-4d]; 1.7-9.1 µIU/L [2-20wk]; .7-64.0 µIU/L [21wk-20y]
Thyroxine (T4), serum all units g/dL: 7.4-13.1 [cord]; 11.8-22.6  [1-3d]; 9.9-16.6 [1-2 wks]; 7.2-14.4 [1-4 mos]; 7.8-16.5 [4-12 mos]; 7.3-15 [1-5 yrs]; 6.4-13.3 [5-10 y]  5.6-11.7 [1-15 yrs] All units nmol/L: 95.46-348.9  [cord]; 152.22-291.54  [1-3d]; 127.71-214.14  [1-2 wks]; 92.88-185.76  [1-4 mos]; 100.62-212.85  [4-12 mos]; 94.17-193.5  [1-5 yrs]; 82.56-171.57 [5-10 y]  72.24-150.93 [1-15 yrs]
Transferrin, serum 130–275 mg/dL (newborn) 1.30–2.75 g/L (newborn)
Triglycerides, serum 10-150 mg/dL .11-1.70 nmol/L
Triiodothyronine (T3), serum (RIA) all units ng/dL: 5-141 [cord, >37w]; 100-700 [1-3d]; 105-245 [1-11m]; 105-269 [1-5y]; 94-241 [6-10y]; 82-213 [11-15y]; 80-210 [16-20y] all units nmol/L: .08-2.17 [cord >37w];1.54-11.4 [1-3d]; 1.62-4.14 [1-11 m]; 1.45-3.71 [1-5y]; 1.26-3.28 [6-10y]; n/a [11-15y]; 1.23-3.23 [16-20y]
Urea nitrogen, serum 21-4 mg/dL [cord]; 3-25 mg/dL [premature(1wk)]; 4-12 mg/dL [newborn]; 5-18 mg/dL [infant/child] 7.5-14.3 nmol/L [cord, >37wk]; 1.1-8.9 nmol/L [premature (1wk)]; 1.4-4.3 nmol/L [newborn]; 1.8-6.4 mg/dL [infant/child]
Body Mass Index (BMI)
Body mass index
Cerebrospinal Fluid
Cell count 0-25 mg/dL [preterm]; 0-130 mg/dL [term]; 0-7 [child]
Gamma globulin
Glucose 24-63 mg/dL [preterm]; 51.2-12.9 mg/dL [term]; 40-80 mg/dL [child] 1.3-3.5 mmol/L [term]; 2.2-4.4 mmol/L [child]
Pressure 8-11 cm H2O[newborn]; <20 cm H2O [infant/child]; 0.5-1.0 cm H2O [respiratory variations] 8-11 cm H2O[newborn]; <20 cm H2O [infant/child]; 0.5-1.0 cm H2O [respiratory variations]
Proteins, total 65-150 mg/dL [preterm]; 64.2 ± 24.2 mg/dL [term]; 5-40 mg/dL [child] 0.65 -1.5 g/L [preterm]; 0.05-0.40 g/L [child]
Hematologic
Bleeding time (template) 2.5-10 min [1-5 yr]; 2.5-13 min [6-10 yr]; 3-8 min [11-16 yr]; 1-7 min [Adult] 2.5-10 min [1-5 yr]; 2.5-13 min [6-10 yr]; 3-8 min [11-16 yr]; 1-7 min [Adult]
Erythrocyte count
Erythrocyte sedimentation rate (ESR) (Westergren) 0-4 mm/hr [term neonate]; 4-20 mm/hr [child]; 1-15 mm/hr [adult male]; 4-25 mm/hr [adult female] 0-4 mm/hr [term neonate]; 4-20 mm/hr [child]; 1-15 mm/hr [adult male]; 4-25 mm/hr [adult female]
Hematocrit
Hemoglobin A1c 5.0-7.5% of total hemoglobin 5.0-7.5% of total hemoglobin