Platelet Count

What it isPlatelets are tiny cell fragments shed from megakaryocytes in the bone marrow. They circulate for about 10 days and form clots at sites of vessel injury.

DoesPlug holes in damaged vessels and trigger the clotting cascade; also participate in inflammation.

GoodA mid-range platelet count balances clotting capacity against thrombotic risk.

BadLow platelets (thrombocytopenia) raise bleeding risk. High platelets indicate inflammation, iron deficiency, or rare myeloproliferative disorders, and elevated counts predict cardiovascular events.