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Michael Sutter: Normal Values -- Pediatrics

 

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Pediatric Normal Values

Hematology

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XYZ Laboratory Pediatric Reference Ranges

In accordance with CLIA Approved Guideline C28-A [7] the XYZ Research Laboratory will adopt the pediatric reference ranges contained in the tables on pages 2-7. 

“The NCCLS Approved Guideline C28-A [7] describes different ways for a laboratory to validate the "transference" of established reference intervals to the individual laboratory:

1. Divine judgment. The acceptability of the transfer may be subjectively assessed on the basis of consistency between the "demographics and geographics" of the study population(s) and the demographics of the laboratory's test population(s). The laboratory simply reviews the information submitted and subjectively verifies that the reference intervals are applicable to the adopting laboratory's patient population and test methods. To do this, all the information about the original study should be requested and made available to the adopting laboratory. This includes the demographics of the reference sample group, the selection process, pre-analytical conditions of the study such as subject preparation and specimen collection and handling techniques, the analytical system used, and the statistical method used to establish the intervals. Sometimes it is useful to request the original reference values and to re-analyze them to verify the original statistical analysis. Most cases for transference involve adoption of intervals from another laboratory using the same analytical system or intervals established by the method manufacturer.

US CLIA regulations permit the Medical Director of a laboratory to make this assessment and judgment.

While transference requires only the appropriate signature, the approach depends on a careful investigation of published recommendations, access to appropriate information, and significance laboratory and medical experience to assure the comparability of conditions.

Provision of reference intervals for sub-populations, particularly the pediatrics year-by-year intervals, often requires this approach because of the difficulty in obtaining sufficient specimens to experimentally establish or verify reference intervals.”

The adoption of these ranges is based on sound clinical judgment and consultation with local medical professionals, including pediatricians.  The reference ranges are judged to be representative of the XYZ population demographics and geographical conditions. These ranges will be monitored and verified over time when appropriate data becomes available.

Pediatric Hematology

Pediatric Reference Ranges--Hematology
Test Age Reference Range Critical Values Source Comments
WBC, 103 cells/uL 0-3 days 7.0 – 25.7 <2.0 and >40,000 10cells/uL Ugandan Range verified locally
  4-60 days 3.6 – 15.4 Ugandan  
  61-365 days 2.5 – 17.8 Ugandan Range verified locally
  366-730 days 3.6 – 16.4 <2.0 and >20,000 10cells/uL Ugandan Range verified locally
  2-6 years 5.0 – 15.5 JHU-Harriet Lane Ref  
  7-12 years 4.5 – 13.5 JHU-Harriet Lane Ref  
  13-18 4.5 – 13.5 JHU-Harriet Lane Ref  
           
RBC, 106 cells/uL 0-3 days 3.3 – 5.0 None Ped. Reference Range-2nd Ed (Coulter) Range verified locally
  4-14 days 3.5 – 5.3 Ped. Reference Range-2nd Ed (Coulter)  
  15-30 days 3.3 – 4.9 Ped. Reference Range-2nd Ed (Coulter)  
  31-60 days 3.1 – 4.1 Ped. Reference Range-2nd Ed (Coulter)  
  61-730 days 3.4 – 5.2 Ped. Reference Range-2nd Ed (Coulter) Range verified locally
  2-12 years 3.3 – 4.9 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 3.3 – 5.4 Ped. Reference Range-2nd Ed (Coulter)  
           
HGB, g/dL 0-3 days 12.6 – 20.9 <10.0 g/dL

 

Ugandan  
  4-7 days 11.3 – 19.8 Ugandan  
  8-60 days 8.1 – 13.2 <7.0 g/dL Ugandan  
  61-730 days 7.2 – 12.7 Ugandan Range verified locally
  2-6 years 11.5 – 13.5

<9.0 HIV -

<7.5 HIV +

JHU-Harriet Lane Ref.-6th Ed  
  7-12 years 11.5 – 15.5 JHU-Harriet Lane Ref.-6th Ed  
  13-18 years 12.0 – 16.0 JHU-Harriet Lane Ref.-6th Ed  
           
HCT, % 0-3 days 45 – 67

None

JHU-Harriet Lane Ref.-6th Ed  
  4-14 days 41 – 65 JHU-Harriet Lane Ref.-6th Ed  
  15-30 days 33 – 55 JHU-Harriet Lane Ref.-6th Ed  
  31-60 days 28 – 42 JHU-Harriet Lane Ref.-6th Ed  
  61-180 days 31 – 41 JHU-Harriet Lane Ref.-6th Ed  
  181-730 days 33 – 39 JHU-Harriet Lane Ref.-6th Ed  
  2-6 years 34 – 40 JHU-Harriet Lane Ref.-6th Ed  
  7-12 years 35 – 45 JHU-Harriet Lane Ref.-6th Ed  
  13-18 years 36 – 50 JHU-Harriet Lane Ref.-6th Ed  
           
MCH, pg 0-3 days 31.3 – 38.6

None

Ped. Reference Range-2nd Ed (Coulter)  
  4-14 days 29.1 – 36.2 Ped. Reference Range-2nd Ed (Coulter)  
  15-30 days 28.8 – 33.6 Ped. Reference Range-2nd Ed (Coulter)  
 

31-60 days

28.0 – 30.5 Ped. Reference Range-2nd Ed (Coulter)  
  61-730 days 24.2 – 30.0 Ped. Reference Range-2nd Ed (Coulter)  
  2-12 years 24.6 – 30.9 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 25.9 – 31.0 Ped. Reference Range-2nd Ed (Coulter)  
           
MCHC, g/dL 0-3 days 29 – 37

None

JHU-Harriet Lane Ref.-6th Ed  
  4-14 days 28.1 – 34.7 JHU-Harriet Lane Ref.-6th Ed  
  15-30 days 28.1 - 35.5 JHU-Harriet Lane Ref.-6th Ed  
  31-60 days 28.3 – 35.3 JHU-Harriet Lane Ref.-6th Ed  
  61-180 days 32.0 – 37.3 JHU-Harriet Lane Ref.-6th Ed  
  181-730 days 30.0 – 36.0 JHU-Harriet Lane Ref.-6th Ed Range verified locally
  2-6 years 31.0 – 37.0 JHU-Harriet Lane Ref.-6th Ed  
  7-12 years 31.0 – 37.0 JHU-Harriet Lane Ref.-6th Ed  
  13-18 years 31.0 – 37.0 JHU-Harriet Lane Ref.-6th Ed  
           
RDW, % 0-3 days 14.9 – 18.5 None Ped. Reference Range-2nd Ed (Coulter)  
  4-14 days 14.6 – 19.2 Ped. Reference Range-2nd Ed (Coulter)  
  15-30 days 14.2 – 18.5 Ped. Reference Range-2nd Ed (Coulter)  
  31-60 days 12.9 – 17.0 Ped. Reference Range-2nd Ed (Coulter)  
  61-730 days 12.1 – 16.2 Ped. Reference Range-2nd Ed (Coulter)  
  2-12 years 11.8 – 14.9 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 12.1 – 18.4 Ped. Reference Range-2nd Ed (Coulter)  
           
PLT, 103 cells/uL 0-3 days 130 – 345 <50 103 cells/uL Ugandan  
  4-7 days 135 – 460 Ugandan  
  8-90 days 150 – 600 Ugandan  
  91-730 days 140 – 635 Ugandan  
  2-6 years 150 – 350 JHU-Harriet Lane Ref.-6th Ed  
  7-18 years 150 – 350 JHU-Harriet Lane Ref.-6th Ed  
           
MPV, fL 0-3 days 7.1 – 8.4 None Ped. Reference Range-2nd Ed (Coulter)  
  4-14 days 7.5 – 10.0 Ped. Reference Range-2nd Ed (Coulter)  
  15-30 days 8.0 – 10.6 Ped. Reference Range-2nd Ed (Coulter)  
  31-60 days 7.0 – 11.3 Ped. Reference Range-2nd Ed (Coulter)  
  61-730 days 6.8 – 9.3 Ped. Reference Range-2nd Ed (Coulter)  
  2-12 years 7.1 – 9.4 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 7.3 – 9.7 Ped. Reference Range-2nd Ed (Coulter)  
Pediatric Reference Ranges--Hematology
Test Age Reference Range Critical Values Source Comments
NEUT % 0-3 days 33.9 – 69.6 Critical values based on absolute cell counts Ped. Reference Range-2nd Ed (Coulter)  
  4-14 days 15.8 – 61.1 Ped. Reference Range-2nd Ed (Coulter)  
  15-30 days 17.3 – 61.0 Ped. Reference Range-2nd Ed (Coulter)  
  31-60 days 16.0 – 58.9 Ped. Reference Range-2nd Ed (Coulter)  
  61-730 days 20.7 – 61.8 Ped. Reference Range-2nd Ed (Coulter)  
  2-12 years 32.3 – 76.9 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 41.9 – 77.8 Ped. Reference Range-2nd Ed (Coulter)  
           
LYMPH% 0-3 days 12 – 42 Critical values based on absolute cell counts Ugandan  
  4-60 days 24 – 61 Ugandan  
  61-365 days 32 – 80 Ugandan  
  366-735 days 28 – 70 Ugandan  
  2-6 years 14.3 – 50.6 Ped. Reference Range-2nd Ed (Coulter)  
  7-12 years 13.1 – 45.2 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 12.9 – 40.6 Ped. Reference Range-2nd Ed (Coulter)  
           
MONOS% 0-3 days 1.4 – 16.3 Critical values based on absolute cell counts Ped. Reference Range-2nd Ed (Coulter)  
  4-60 days 1.3 – 22.2 Ped. Reference Range-2nd Ed (Coulter)  
  61-365 days 2.7 – 22.9 Ped. Reference Range-2nd Ed (Coulter)  
  366-730 days 2.4 – 19.1 Ped. Reference Range-2nd Ed (Coulter)  
  2-6 years 3.3 – 18.1 Ped. Reference Range-2nd Ed (Coulter)  
  7-12 years 13.1 – 45.2 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 12.9 – 40.6 Ped. Reference Range-2nd Ed (Coulter)  
           
EOS% 0-3 days 0 – 2.9 Critical values based on absolute cell counts Ped. Reference Range-2nd Ed (Coulter)  
  4-14 days 0 – 7.5 Ped. Reference Range-2nd Ed (Coulter)  
  15-30 days 0 – 5.4 Ped. Reference Range-2nd Ed (Coulter)  
  31-60 days 0 – 3.1 Ped. Reference Range-2nd Ed (Coulter)  
  61-730 days 0 – 3.1 Ped. Reference Range-2nd Ed (Coulter)  
  2-12 years 0 – 4.0 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 0 – 4.1 Ped. Reference Range-2nd Ed (Coulter)  
           
BASO% 0-3 days 0 – 2.1 Critical values based on absolute cell counts Ped. Reference Range-2nd Ed (Coulter)  
  4-14 days 0 – 2.7 Ped. Reference Range-2nd Ed (Coulter)  
  15-30 days 0 – 1.1 Ped. Reference Range-2nd Ed (Coulter)  
  31-60 days 0 – 0.9 Ped. Reference Range-2nd Ed (Coulter)  
  61-730 days 0 – 1.1 Ped. Reference Range-2nd Ed (Coulter)  
  2-12 years 0 – 1.1 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 0 – 1.0 Ped. Reference Range-2nd Ed (Coulter)  
           
NEUT, 103 cells/uL 0-1 days 5.0 – 21.0 <3.0 JHU-Harriet Lane Ref.-6th Ed  
  2-7 days 1.5 – 10.0 <1.0 JHU-Harriet Lane Ref.-6th Ed  
  7-14 days 1.0 – 9.5 <0.75 JHU-Harriet Lane Ref.-6th Ed  
  14-30 days 1.0 – 8.5 JHU-Harriet Lane Ref.-6th Ed  
  31-180 days 1.0 – 8.5 JHU-Harriet Lane Ref.-6th Ed  
  181-730 days 1.0 – 8.5 JHU-Harriet Lane Ref.-6th Ed  
  2-6 years 1.5 – 8.0 JHU-Harriet Lane Ref.-6th Ed  
  7-10 years 1.5 – 8.5 JHU-Harriet Lane Ref.-6th Ed  
  11-16 years 1.8 – 8.0 JHU-Harriet Lane Ref.-6th Ed  
           
LYMPH, 103 cells/uL 0-3 days 1.7 – 6.5 <0.5 Ugandan  
  4-60 days 1.3 – 9.3 Ugandan  
  61-365 days 1.0 – 10.6 Ugandan  
  366-730 days 1.1 – 8.6 Ugandan  
  2-6 years 1.5 – 7.0 JHU-Harriet Lane Ref.-6th Ed  
  6-12 years 0.9 – 3.4 JHU-Harriet Lane Ref.-6th Ed  
  12-16 years 1.2 – 5.2 JHU-Harriet Lane Ref.-6th Ed  
           
MONO, 103 cells/uL 0-3 days 0.2 – 2.2 None Ped. Reference Range-2nd Ed (Coulter)  
  4-14 days 0.1 – 2.9 Ped. Reference Range-2nd Ed (Coulter)  
  15-30 days 0.2 – 5.0 Ped. Reference Range-2nd Ed (Coulter)  
  31-60 days 0.2 – 2.1 Ped. Reference Range-2nd Ed (Coulter)  
  61-730 days 0.3 – 1.9 Ped. Reference Range-2nd Ed (Coulter)  
  2-12 years 0.4 – 1.1 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 0.4 – 0.9 Ped. Reference Range-2nd Ed (Coulter)  
           
EOS, 103 cells/uL 0-3 days 0 – 0.2 None Ped. Reference Range-2nd Ed (Coulter)  
  4-14 days 0 – 0.6 Ped. Reference Range-2nd Ed (Coulter)  
  15-30 days 0 – 0.5 Ped. Reference Range-2nd Ed (Coulter)  
  31-60 days 0 – 0.2 Ped. Reference Range-2nd Ed (Coulter)  
  61-730 days 0 – 0.2 Ped. Reference Range-2nd Ed (Coulter)  
  2-12 years 0 – 0.2 Ped. Reference Range-2nd Ed (Coulter)  
  13-18 years 0 – 0.2 Ped. Reference Range-2nd Ed (Coulter)  
           
BASO, 103 cells/uL 0-3 days 0 – 0.5 None Calculated Value/based on RR's Above  
  4-60 days 0 – 0.4 Calculated Value/based on RR's Above  
  61-730 days 0 – 0.2 Calculated Value/based on RR's Above  
  2-12 years 0 – 0.2 Calculated Value/based on RR's Above  
  13-18 years 0 – 0.1 Calculated Value/based on RR's Above  

Flow Cytometry--Pediatric Reference Ranges

Pediatric Reference Ranges--Flow Cytometry
Test Age Reference Range Critical Values Source Comments
CD4%- 0-30 days 18 – 17 Critical values based on absolute cell counts Ugandan  
  31-365 days 15 – 6 Ugandan  
  366-730 days 18 – 60 Ugandan  
  2-5 years 23 – 48 JHU-Harriet Lane Ref.-6th Ed  
  6-10 years 27 – 53 JHU-Harriet Lane Ref.-6th Ed  
  11-16 years 25 – 48 JHU-Harriet Lane Ref.-6th Ed  
           
CD4ABS, cells/uL 0-30 days 400 – 3600 <200 cells/uL Ugandan Range verified locally
  31-365 days 500 – 3800 Ugandan Range verified locally
  366-730 days 400 – 3400 Ugandan Range verified locally
  2-5 years 500 – 2400 JHU-Harriet Lane Ref.-6th Ed  
  6-10 years 300 – 2000 JHU-Harriet Lane Ref.-6th Ed  
  11-16 years 400 – 2100 JHU-Harriet Lane Ref.-6th Ed  
           
CD8%- 0-7 days 10 – 41 None JHU-Harriet Lane Ref.-6th Ed  
  8-60 days 9 – 28 JHU-Harriet Lane Ref.-6th Ed  
  61-270 days 13 – 26 JHU-Harriet Lane Ref.-6th Ed  
  271-730 days 11 – 32 JHU-Harriet Lane Ref.-6th Ed  
  2-5 years 14 – 33 JHU-Harriet Lane Ref.-6th Ed  
  6-10 years 19 – 34 JHU-Harriet Lane Ref.-6th Ed  
  11-16 years 9 – 35 JHU-Harriet Lane Ref.-6th Ed  
           
CD8ABS, cells/uL 0-7 days 200 – 1900 None JHU-Harriet Lane Ref.-6th Ed Range verified locally
  8-60 days 400 – 1700 JHU-Harriet Lane Ref.-6th Ed  
  61-270 days 600 – 2200 JHU-Harriet Lane Ref.-6th Ed  
  271-730 days 400 – 2300 JHU-Harriet Lane Ref.-6th Ed Range verified locally
  2-5 years 300 – 1600 JHU-Harriet Lane Ref.-6th Ed  
  6-10 years 300 – 1800 JHU-Harriet Lane Ref.-6th Ed  
  11-16 years 200 – 1200 JHU-Harriet Lane Ref.-6th Ed  
           
CD4CD8RT, ratio 0-7 days 1.0 – 2.6 None JHU-Harriet Lane Ref.-6th Ed  
  8-60 days 1.3 – 6.3 JHU-Harriet Lane Ref.-6th Ed  
  61-270 days 1.6 – 3.8 JHU-Harriet Lane Ref.-6th Ed  
  271-730 days 0.9 – 3.7 JHU-Harriet Lane Ref.-6th Ed Range verified locally
  2-5 years 0.9 – 2.9 JHU-Harriet Lane Ref.-6th Ed  
  6-10 years 0.9 – 2.6 JHU-Harriet Lane Ref.-6th Ed  
  11-16 years 0.9 – 3.4 JHU-Harriet Lane Ref.-6th Ed  

Chemistry--Pediatric Reference Ranges

Pediatric Reference Ranges Chemistry
Test Age Reference Range Critical Value Source Comments
Albumin, g/dL 1-4 days 2.8 – 4.4 g/dL <2.0 g/dL Roche.Ref.Manual  
  5 days - 14 yrs 3.8 – 5.4 g/dL Roche.Ref.Manual  
  15-18 years 3.2 – 4.5 g/dL Roche.Ref.Manual  
           
Alk. Phosphatase, IU/L 0-1 days 0 – 250 U/L To be determined Roche.Ref.Manual  
  2-5 days 0 – 231 U/L Roche.Ref.Manual  
  6-180 days 0 – 449 U/L Roche.Ref.Manual  
  7-12 months 0 – 462 U/L Roche.Ref.Manual  
  1-3 years 0 – 281 U/L Roche.Ref.Manual  
  4-6 years 0 – 269 U/L Roche.Ref.Manual  
  7-12 years 0 – 300 U/L Roche.Ref.Manual  
  13-17 years (male) 0 – 390 U/L Roche.Ref.Manual  
  13-17 years (female) 0 – 187 U/L Roche.Ref.Manual  
           
ALT (SGPT), U/L 0-6 days 0 – 57 U/L >450 U/L Ugandan Range verified locally
  7-30 days 0 – 45 U/L Ugandan  
  31-60 days 5 – 55 U/L Ugandan  
  61-180 days 0 – 60 U/L Roche.Ref.Manual Range verified locally
  7-12 months 0 – 57 U/L Roche.Ref.Manual Range verified locally
  1-3 years 0 – 39 U/L >390 U/L Roche.Ref.Manual Range verified locally
  4-6 years 0 – 39 U/L Roche.Ref.Manual  
  7-12 years 0 – 39 U/L Roche.Ref.Manual  
  13-17 year (male) 0 – 26 U/L >230 U/L Roche.Ref.Manual  
  13-17 year (female) 0 – 23 U/L Roche.Ref.Manual  
           
AST (SGOT), U/L 0-1 day 0 – 122 U/L >1100U/L Roche.Ref.Manual  
  2-5 days 0 – 110 U/L Roche.Ref.Manual  
  6-180 days 0 – 84 U/L >840 U/L Roche.Ref.Manual  
  7-12 months 0 – 89 U/L Roche.Ref.Manual  
  1-3 year 0 – 56 U/L >510 U/L Roche.Ref.Manual  
  4-6 year 0 – 52 U/L Roche.Ref.Manual  
  7-12 year 0 – 51 U/L Roche.Ref.Manual  
  13-17 year (male) 0 – 35 U/L >270 U/L Roche.Ref.Manual  
  13-17 year (female) 0 – 27 U/L Roche.Ref.Manual  
           
Amylase (AMY) 0-1 years 0 – 8 U/L To be determined Roche.Ref.Manual  
  1-9 years 0 – 31 U/L Roche.Ref.Manual  
  10-18 years 0 – 39 U/L Roche.Ref.Manual  
           
Creatine Kinase (CK) 1 day 0 – 712 U/L To be determined Roche.Ref.Manual  
  2-5 days 0 – 652 U/L Roche.Ref.Manual  
  6-180 days 0 – 295 U/L Roche.Ref.Manual  
  7-12 months 0 – 203 U/L Roche.Ref.Manual  
  1-3 years 0 – 228 U/L Roche.Ref.Manual  
  4-6 years 0 – 149 U/L Roche.Ref.Manual  
  7-12 years (male) 0 – 247 U/L Roche.Ref.Manual  
  7-12 years (female) 0 – 154 U/L Roche.Ref.Manual  
  13-17 years (male) 0 – 270 U/L Roche.Ref.Manual  
  13-17 years (female) 0 – 123 U/L   Roche.Ref.Manual  
           
Creatinine, mg/dL 0-1 days 0 – 0.98 mg/dL To be determined Roche.Ref.Manual  
  2-14 days 0 – 0.88 mg/dL Roche.Ref.Manual
 
  15-59 days 0 – 0.70 mg/dL MU-JHU PI's Medical Committee  
  2-12 months 0 – 0.39 mg/dL Roche.Ref.Manual  
  1-3 years 0 – 0.35 mg/dL Roche.Ref.Manual  
  4-5 years 0 – 0.42 mg/dL Roche.Ref.Manual  
  6-7 years 0 – 0.47 mg/dL Roche.Ref.Manual  
  8-9 years 0 – 0.53 mg/dL Roche.Ref.Manual  
  10-11 years 0 – 0.64 mg/dL Roche.Ref.Manual  
  12-13 years 0 – 0.68 mg/dL Roche.Ref.Manual  
  14-15 years 0 – 0.77 mg/dL Roche.Ref.Manual  
           
Glucose, mg/dL 1-5 days 50 – 80 mg/dL To be determined Roche.Ref.Manual  
  6-365 days 42 – 96 mg/dL MU-JHU PI's Medical Committee  
  1-2 years 33 – 111 mg/dL Roche.Ref.Manual  
  3-4 years 52 – 98 mg/dL Roche.Ref.Manual  
  5-6 years 69 – 100 mg/dL Roche.Ref.Manual  
           
GGT, U/L 0-1 days 0 – 151 U/L To be determined Roche.Ref.Manual  
  2-5 days 0 – 185 U/L Roche.Ref.Manual  
  6-180 days 0 – 204 U/L Roche.Ref.Manual  
  7-12 monts 0 – 34 U/L Roche.Ref.Manual  
  1-3 years 0 – 18 U/L Roche.Ref.Manual  
  4-6 years 0 – 23 U/L Roche.Ref.Manual  
  7-12 years 0 – 17 U/L Roche.Ref.Manual  
  13-17 years (male) 0 – 45 U/L Roche.Ref.Manual  
  13-17 years (female) 0 – 33 U/L Roche.Ref.Manual  
           
Ura nitrogen, mg/dL (BUN) 0-6 months 0 – 42 mg/dL To be determined Roche.Ref.Manual  
  0.5-18 years 0 – 48 mg/dL Roche.Ref.Manual  
           
Total Bilirubin 0-3 days 0 – 6.0 mg/dL To be determined Ugandan
  4-7 days 0 – 12.9 mg/dL Ugandan  
  8-60 days 0 – 2.1 mg/dL Ugandan  
  61 days-18 years 0 – 1.0 mg/dL Roche.Ref.Manual  
           
Uric Acid (UA) 0-1 days 0 – 5.5 mg/dL To be determined Roche.Ref.Manual  
  2-28 days 0 – 5.2 mg/dL Roche.Ref.Manual  
  1-12 months 0 – 6.2 mg/dL Roche.Ref.Manual  
  1-18 years 0 – 6.1 mg/dL Roche.Ref.Manual  
           
Electrolytes          
Chloride (CL) 0-1 days 97 –122 mmol/L To be determined Roche.Ref.Manual  
  2-28 days 95 –116 mmol/L Roche.Ref.Manual  
  1-12 months 93 –112 mmol/L Roche.Ref.Manual  
  1-18 years 96 –111 mmol/L Roche.Ref.Manual  
           
Potassium (K) 0-1 days 3.2 – 4.6 mmol/L To be determined Roche.Ref.Manual  
  2-28 days 3.6 – 6.1 mmol/L Roche.Ref.Manual  
  1-12 months 3.6 – 5.8 mmol/L Roche.Ref.Manual  
  1-18 years 3.1 – 5.1 mmol/L Roche.Ref.Manual  
           
Sodium (Na) 0-1 days 128 – 147 mmol/L To be determined Roche.Ref.Manual  
  2-28 days 132 – 147 mmol/L Roche.Ref.Manual  
  1-12 months 129 – 143 mmol/L Roche.Ref.Manual  
  1-18 years 132 – 145 mmol/L Roche.Ref.Manual  

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