Pediatric Lab Values

Some of these normal ranges change markedly when age drops below two years and especially below one year.

Each lab has their own set of "normals" which depend on the way they measure particular items. Be sure to ask for the normal values at the lab where you child's tests are being done.

Tests of Liver Injury Normal Range

SGOT (AST)

SGPT (ALT)

GGT-P

ALP (Alkaline Phosphatase)

0 - 60 IU/L

0 - 50 U/L

0 - 50 IU/L

75 - 375 IU/L
Tests of Synthetic Function Normal Range

Albumin

PT / Prothrombin Time

PTT / Partial Thromboplastin Time

3.0 - 5.0 gm/dl

11 - 13 seconds

20 - 30 seconds
Tests of Detoxification Normal Range

Bilirubin (Total)

Bilirubin (Direct)

Ammonia

0 - 1.4 mg/dl

0 - .4 mg/dl

11 - 35 mcg/dl
Kidney Function Normal Range

BUN / Blood Urea Nitrogen

Creatinine

5 - 18 mg/dl

Under .5 mg/dl
Electrolyte Balance Normal Range

Sodium

Potassium

Chloride

Bicarbonate

Calcium

Magnesium

Phosphate

135 -144 mEq/L

3.6 - 5.2 mEq/L

97 - 106 mEq/L

24 - 34 mEq/L

8.8 - 10.4 mg/dl

1.3 - 2.3 mg/dl

3.2 - 5.7 mg/dl
Blood Cell Status Normal Range

Hematocrit

Hemoglobin

White Blood Count

Platelets

30 - 40%

10 - 13 gm/dl

3,000 - 10,000 cells/mcl

170,000 - 380,000/mm3
Other Normal Range

Glucose

Cholesterol

60 - 100 mg/dl

80 - 200 mg/dl
Notes

cells/mcl = cells per microliter

gm/dl = grams per deciliter

IU/L = international units per liter

mcg/dl = micrograms per deciliter

mEq/L = milliequivalents per liter

mg/dl = milligrams per deciliter

mm3 = millimeters cubed

U/L = units per liter