TABLE OF REFERENCE INTERVALS
Specimen Test S B B P
S/P S/P S/P B P
S/P S S S S S P S S S B B B B
S/P S/P B B
S/P S B B B S B B B
S/P B B P P S B B S S S S S S S S S
S B
S Albumin*
Base excess (men) Base excess (women) Bicarbonate
Bilirubin, conjugated* Bilirubin, total* Calcium, total
CO2 content (venous) Chloride*
Cholesterol (NCEP recommendation) Cortisol (a.m.)*
Creatinine (Jaffe, men)* Creatinine (Jaffe, women)* Ferritin (men)*
Ferritin (women)* Fibrinogen Folate
Glucose, fasting* Haptoglobin*
Hematocrit (men)* Hematocrit (women)* Hemoglobin (men)* Hemoglobin (women)* Iron, total
Iron binding capacity Lactate (venous) Lead
Lithium, therapeutic Magnesium*
MCH (RBC index) MCHC (RBC index) MCV (RBC index) Osmolality
pCO2 pCO2
(arterial) (men) (arterial) (women) pH (arterial)*
Phosphate (as P)* pO2
(arterial) Platelet count
Potassium (men)* Potassium (women)*
Protein, total (recumbent) RBC count (men)* RBC count (women)* Sodium
Thyroxine, free*
Thyroxine (T4), total (men)* Thyroxine (T4), total (women)*
Triglyceride (NCEP recommendation) Urea nitrogen (BUN)* Uric acid (men)*
Uric acid (women)*
Vitamin B12 (WHO Recommendation) Vitamin D (25-OH) WBC count
Zinc
Conventional Units 3.5-5.2 g/dL
-3.3 to +1.2 mmol/L -2.4 to +2.3 mmol/L 21-29 mmol/L 0.1-0.4 mg/dL 0.1-1.2 mg/dL 8.6-10.3 mg/dL 22-26 mEq/L 98-107 mEq/L 140-200 mg/dL 5-23 µg/dL
0.9-1.3 mg/dL 0.6-1.1 mg/dL 39-715 ng/mL 6-362 ng/mL
200-400 mg/dL 9.5-39.0 ng/mL 74-100 mg/dL 30-200 mg/dL
40.0-52.0 % 35.0-47.0 %
14-18 g/dL 12-16 g/dL
20-168 µg/dL 250-400 µg/dL 5-12 mg/dL <5 µg/dL
0.5-1.2 mEq/L 1.7-2.4 mg/dL
28.0-32.0 pg/cell 32.0-36.0 % 83.0-95.0 fL
270-295 m0sm/kg 35-48 mm Hg 32-45 mm Hg
7.35-7.45
2.5-4.5 mg/dL 83-108 mm Hg 150-450 103
3.5-4.5 mEq/L 3.4-4.4 mEq/L 6.0-7.8 g/dL 4.6-6.2 106 4.2-5.2 106
/mm3
Conversion Factor (multiply by)
10 1 1 1
17.1 17.1 0.25 1 1
0.0259 27.6 88.4 88.4 1 1
0.01 2.265
0.0555 0.01 0.01 0.01 10 10
0.179 0.179 0.111 0.048 1
0.4114 1
10 1 1
0.133 0.133 1
0.323 0.133 1 1 1
/mm3 /mm3
136-145 mEq/L 0.8-2.7 ng/dL 4.6-10.5 µg/dL 5.5-11 µg/dL 10-150 mg/dL 8-24 mg/dL
4.4-7.6 mg/dL 2.3-6.6 mg/dL >201 pg/mL
10-65 ng/ml 4-11 103
80-120 µg/dL /mm3
10 1 1 1
12.9 12.9 12.9
0.0113 0.357 0.059 0.059 0.733
2.50 1
0.153 SI Units 35-52 g/L
-3.3 to +1.2 mmol/L -2.4 to +2.3 mmol/L 21-29 mmol/L 1.7-6.8 µmol/L 1.7-20.5 µmol/L 2.15-2.57 mmol/L 22-26 mmol/L 98-107 mmol/L 3.6-5.2 mmol/L 138-635 nmol/L 80-115 µmol/L 53-97 µmol/L 39-715 µg/L 6-362 µg/L 2-4 g/L
21.5-88.4 nmol/L 4.1-5.6 mmol/L 0.3-2.0 g/L
0.40-0.52 Vol fraction 0.35-0.47 Vol fraction 140-180 g/L 120-160 g/L
3.5-30.0 µmol/L 44.8-71.6 µmol/L 0.36-0.75 mmol/L <0.24 µmol/L 0.5-1.2 mmol/L 0.70-0.99 mmol/L 28.0-32.0 pg/cell 0.32-0.36 g/L 83.0-95.0 fL
270-295 mmol/kg 4.7-6.4 kPa 4.3-6.0 kPa
7.35-7.45
0.81-1.45 mmol/L 11.0-14.4 kPa 150-450 109
/L
3.5-4.5 mmol/L 3.4-4.4 mmol/L 60-78 g/L 4.6-6.2 1012 4.2-5.2 1012
/L /L
136-145 mmol/L 10.3-34.7 pmol/L 59-135 nmol/L 65-138 nmol/L 0.11-1.7 mmol/L 2.7-8.6 mmol/L 0.26-0.45 mmol/L 0.13-0.39 mmol/L >147 pmol/L
25-162 nmol/L 4-11 109
/L 12-18 µmol/L
Specimens: B, whole blood; P, plasma; S, serum. Reference intervals depend on test method and the demographics of the normal population used. *Adult intervals (18Y-60Y). Age specific ranges apply for pediatric and/or geriatric populations. Source: Burtis CA, Bruns DE. Tietz Fundamentals of Clinical Chemistry and Molecular Diagnostics. 7th ed. St. Louis, MO; Elsevier; 2015 and McPherson RA, Pincus MR. Henry’s Clinical Diagnosis and Management by Laboratory Methods. 22nd ed. Philadelphia, PA: Elsevier Saunders; 22nd ed; 2011. Revised 2020 by S.T. Campbell, PhD, Department of Pathology, Montefiore Medical Center, Bronx, NY.
14 CLR 2020-2021 • MLO •
www.clr-online.com
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