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A complete blood count (CBC) is a common test to diagnose anemia by measuring red blood cell count, hemoglobin, and hematocrit levels. Iron deficiency is a common cause of anemia, and doctors may ...

The time it takes to collect a sample for a flu test is usually less than a minute, but the results can take from 15 minutes to a few hours, depending on the test type. Several types of flu tests are ...