Platelet count
Platelet count is a blood test that measures the average number of platelets in a person's blood. Platelets, also known as thrombocytes, are small, colorless cell fragments in the blood that form clots and stop or prevent bleeding. Platelets are produced in the bone marrow and are then released into the bloodstream.
Overview[edit | edit source]
The platelet count is often included in a complete blood count (CBC) test, which is a common blood test that evaluates the cells that circulate in the blood. A normal platelet count ranges from 150,000 to 450,000 platelets per microliter of blood. Having more than 450,000 platelets is a condition called thrombocytosis; having less than 150,000 is known as thrombocytopenia.
Procedure[edit | edit source]
The platelet count is performed with a routine blood draw, usually from a vein in the arm. The blood sample is then sent to a laboratory, where a machine counts the number of platelets in the blood sample.
Interpretation[edit | edit source]
A high platelet count can be caused by cancer, anemia, rheumatoid arthritis, inflammation, infection, surgery, or the removal of the spleen. A low platelet count can be caused by leukemia, anemia, viral infections, chemotherapy, heavy alcohol consumption, and certain medications.
See also[edit | edit source]
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