Laboratory evaluation

A. Hemoglobin and hematocrit serve as an estimate of the RBC mass. Immediately after acute blood loss, the Hb will be normal.

B. Reticulocyte count reflects the rate of marrow production of RBCs. Absolute reticulocyte count = (% reticulocytes/100) x RBC count. An increase of reticulocytes to greater than 100,000/mm3 suggests a hyperproliferative bone marrow.

C. Mean corpuscular volume (MCV) often is used in classifying anemia (microcytic, normocytic, macrocytic).

Normal Himatologic Valuis

Age of patient

(pm3)

One to three days

14.5-22.5 g per dL

45-67

95-121

Six months to two years

10.5-13.5 g per dL

33-39

70-B6

12 to 18 years (male)

13.0-16.0 g per dL

37-49

7B-9B

12 to 18 years (female)

12.0-16.0 g per dL

36-46

7B-102

>18 years (male)

13.5-17.5 g per dL

41-53

7B-9B

>18 years (female)

12.0-16.0 g per dL

36-46

7B-9B

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