A platelet blood count is a blood test that measures the average number of platelets in the blood. Platelets help the blood heal wounds and prevent excessive bleeding. High or low platelet levels can be a sign of a severe condition.
The mean platelet count blood test is typically part of a complete blood count (CBC) test. A CBC reveals important information about the number of different blood cells in the body.
Platelets, also called thrombocytesTrusted Source, are fragments of larger cells made in the bone marrow called megakaryocytes.
The test gives a platelet count per microliter (mcL) of blood.
The measurement is the number of platelets a person has, on average, per microliter.
The ideal platelet range is 150,000 to 400,000 per mcLTrusted Source in most healthy people.
Low platelet count is known as thrombocytopenia. High platelet count is known as thrombocytosis.
The test can be done on its own or as part of a CBC test. A doctor will often perform a platelet count test if they suspect a person has a disorder that affects platelet count.