A Platelet test measures the number of platelets present in your blood. Platelets are small cell fragments that play a crucial role in blood clotting and help stop bleeding when injuries occur. Abnormal platelet levels can indicate various health conditions, including bleeding disorders, clotting problems, infections, and bone marrow issues.

This test is usually part of a Complete Blood Count (CBC) but can also be done separately if needed. A small blood sample is collected from a vein, and no fasting or special preparation is required. Doctors often use this test to diagnose health concerns, monitor ongoing treatments, and evaluate overall blood health.