Complete blood count (CBC). A blood test called a complete blood count, or CBC, evaluates components and characteristics of your blood, such as: Red blood cells transport oxygen throughout your body from your lungs.
White blood cells, which fend against illnesses and infections. White blood cells may be divided into five main categories. A CBC test counts all of the white blood cells in your blood. The quantity counts of each of these white blood cells is counts during a separate examination known as a CBC with differential. Platelets, which help your blood clot to halt bleeding. Red blood cells contain the protein haemoglobin, which transports oxygen from your lungs to the rest of your body. Hematocrit is a metric used to determine how many red blood cells are present in your blood. Mean corpuscular volume (MCV), a gauge of your red blood cells' typical size.
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