The purpose of screening is early diagnosis and treatment.
Screening tests are usually administered to people without
current symptoms, but who may be at high risk for certain
diseases or conditions. A hematocrit or a hemoglobin test can
detect anemia. These tests are part of a complete blood count,
which is often done when you go to the doctor for an annual
physical exam, or as part of your prenatal exams. A hematocrit
is done every time you give blood. Infants and children are
often screened for iron deficiency anemia as part of a well
child evaluation. The percentage of your blood that is red
cells. This is easily done by filling a tiny glass tube with a
drop of blood from your finger and spinning it down in a
centrifuge so that all the cells settle to the bottom. Normal
adult values are 42%-52% in men and 37%-48% in women. The amount
of hemoglobin (oxygen-carrying chemical) in your blood. Normal
adult values for men are 13.8–17.2 grams per deciliter of blood
(g/dL) and 12.1–15.1 gm/dL for women. The above