Diagnostic Tests 2022

Reference Values&CBC

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Reference Values&CBC
Reference Values&CBC
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The reference values ​​of the complete blood count generally vary according to the sex and age of the patient, however, it is also possible to observe differences in the values ​​depending on the laboratory where the collection was performed.

The blood count is used to evaluate certain blood aspects such as the number of red blood cells, leukocytes and platelets, being a good way to identify the presence of infections, excess iron or anemia, for example.

Usually there is a sign of infection when there is an increase in leukocytes and there are signs of allergy when there is an increase in eosinophils, but it is important that the interpretation of the blood count is done by the doctor who ordered the exam because he must take the symptoms into account that the individual presents.

Children's Erythrogram

The following table indicates the erythrogram reference values ​​in children:

Reference Values ​​for Newborns Baby reference values ​​up to 1 year Child Reference Values
Erythrocytes 4.0 to 5.6 million/ µL 4.0 to 4.7 million/ µL 4.5 to 4.7 million/ µL
Hemoglobin 13.5 to 19.6 g/dL 11.0 to 13.0 g/dL 11.5 to 14.8 g/dL
Hematocrit 44 to 62% 36 to 44% 37 to 44%
VCM 77.0 to 101.0 fL 77.0 to 95.0 fL
HCM 28.0 to 33.0 pg 30.0 to 33.0 pg

Female blood count

The following table indicates the reference values ​​of the blood count in women:

Reference values ​​of women
Erythrogram
Red cells 3.9 to 5.4 million/ µL
Hemoglobin 12.0 to 16.0 g/dL
Hematocrit 35 to 47%
VCM 80.0 to 100.0 fL
HCM 27.0 to 32.0 pg
CHCM 31.0 to 36.0 g/dL
RDW 10.0 to 16.0%
Leucogram
Total leukocytes 4000 to 11000/ µL
Rod Neutrophils 0 to 800/ µL
Segmented Neutrophils 1600 to 8000/ µL
Lymphocytes 900 to 4000/ µL
Monocytes 100 to 1000/ µL
Eosinophils 0 to 500/ µL
Basophiles 0 to 200/ µL
Platelets 150 000 to 450 000 µL

CBC in pregnancy

In the case of pregnant women, the WBC may show different normal reference values ​​according to the trimester of pregnancy and the age of the woman, with variation in the normal number of white blood cells. See what are the leukogram reference values ​​in pregnancy.

In relation to the red series, there is no change in the reference values, however it is common to see changes in the levels of red blood cells and hemoglobin, due to the greater need for oxygen supply to the baby and blood hemodilution, It is important that these parameters are evaluated by the physician and the need to initiate appropriate treatment is verified.

Men's blood count

The following table indicates the reference values ​​of the blood count in men:

Reference Values
Erythrocytes
Red cells 4.2 to 5.9 million/ µL
Hemoglobin 13.0 to 18.0 g/dL
Hematocrit 38 to 52%
VCM 80.0 to 100.0 fL
HCM 27.0 to 32.0 pg
CHCM 31.0 to 36.0 g/dL
RDW 10 to 16%
Leucogram
Total leukocytes 4000 to 11000/ µL
Rod Neutrophils 0 to 800/ µL
Segmented Neutrophils 1600 to 8000/ µL
Lymphocytes 900 to 4000/ µL
Monocytes 100 to 1000/ µL
Eosinophils 0 to 500/ µL
Basophiles 0 to 200/ µL
Platelets 140 000 to 450 000 µL

Change results

To interpret the results of the complete blood count, it is necessary to consult the doctor who ordered the exam, because not always that there is a change in the exam values ​​it means that there is a he alth problem.

When there is any change in the results of the blood count, it is important that the doctor evaluates the person, taking into account the symptoms they present and the results of the other tests requested. Often, although there is a slight change in one of the blood count values, this does not necessarily represent a he alth problem. Learn how to interpret blood count results.

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