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Anemia Calculator For Possible Diagnosis

This calculator will help pinpoint potential causes of anemia based on an automated flowchart approach.  Start by making your first selection below, then press analyze.

Mean corpuscular volume (MCV):
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Anemia is defined as a decrease in the total amount of red blood cells (RBCs) or hemoglobin in the blood and is present when it falls below certain thresholds depending on the age, gender, and race of the patient.   Based on WHO criteria, the lower limit of normal in adults is 13 g/dL in men and 12 g/dL in women. The blood hemoglobin concentration may more accurately indicate the total red cell mass compared with the hematocrit.  The various types of anemia are due to blood loss (usually gastrointestinal bleeding, trauma, others),  decreased red blood cell production (iron deficiency, a lack of vitamin B12, folic acid, thalassemia, and a number of neoplasms), or increased red blood cell breakdown ( genetic conditions such as sickle cell anemia, infections e.g. malaria, and certain autoimmune diseases).  The type of anemia can also be classified based on the size of the red blood cells and the amount of hemoglobin present in each cell.  Examples  include: microcytic (smaller RBC's), macrocytic (larger), or normocytic (normal RBC size).  Hypochromic (paler than normal - less red).

Symptoms vary greatly and depend on the onset and the individual's ability to compensate for a loss in oxygen-carrying capacity.  Anemia with a slow onset may go undetected or present with vague symptoms including tiredness, weakness, shortness of breath, poor concentration or reduced exercise tolerance.  Anemia that occurs rapidly often has more obvious symptoms such as confusion, mental status changes, lightheadedness, loss of consciousness, palpitations, respiratory distress, or hypotension.  Symptoms are often more severe if there is underlying coronary artery disease, congestive heart failure, or  intrinsic pulmonary or cerebrovascular disease. Typical signs exhibited may include pallor (pale skin, lining mucosa, conjunctiva and nail beds), however, further testing is required to confirm the diagnosis.


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Anemia Calculator For Possible Diagnosis