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TABLE OF REFERENCE INTERVALS


Specimen Test S B B P S S


S/P B


S/P S S S S S S P S S S B B B B


S/P S/P B B S B B B S B B B


S/P B B S 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., total)* 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 (at bed rest) Lead


Magnesium (Atomic Absorption) 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


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 3.9-5.1 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 9-10.4 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 <25 µg/dL


1.6-2.6 mg/dL


28.0-32.0 pg/cell 32.0-36.0 % 83.0-95.0 fL


280-295 m0sm/kg 35-48 mm Hg 32-45 mm Hg


7.35-7.45


2.8-4.8 mg/dL 83-108 mm Hg 150-450 103


3.8-4.9 mEq/L 6.0-7.8 g/dL 4.5-5.9 106 4.5-5.1 106


/mm3


/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


3.7-7.7 mg/dL 2.5-6.2 mg/dL >201 pg/mL


10-65 ng/ml 4-11 103


80-120 µg/dL /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 0.4114 1


10 1 1


0.133 0.133 1


0.323 0.133 1 1


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 39-51 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 1.0-19.9 µmol/L 2.24-2.6 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 <1.21 µmol/L


0.66-1.07 mmol/L 28.0-32.0 pg/cell 320-360 g/L 83.0-95.0 fL


280-295 mmol/kg 4.7-6.4 kPa 4.3-6.0 kPa


7.35-7.45


0.89-1.54 mmol/L 11.0-14.4 kPa 150-450 109


/L


3.8-4.9 mmol/L 60-78 g/L 4.5-5.9 1012 4.5-5.1 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 2.8-8.6 mmol/L 0.22-0.46 mmol/L 0.15-0.37 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 Rifai, N, Horvath AR, Wittwer, CT. Tietz Textbook of Clinical Chemistry and Molecular Diagnostics, 7th ed. St. Louis, MO; Elsevier; 2018 McPherson RA, Pincus MR. Henry’s Clinical Diagnosis and Management by Laboratory Methods. 22nd ed. Philadelphia, PA: Elsevier Saunders; 22nd ed; 2011. Revised 2021 by S.T. Campbell, PhD, DABCC, FAACC, Department of Pathology, Montefiore Medical Center, Bronx, NY.


12 CLR 2021-2022 • MLO • www.clr-online.com


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