Platelets

Platelets (PLATE-lets) are blood cell fragments that help your blood clot. They stick together to seal cuts or breaks on blood vessel walls and stop bleeding.

Abnormal platelet levels might be a sign of a bleeding disorder (not enough clotting) or a thrombotic disorder (too much clotting).

Normal Range (Varries with altitude):

150-450 billion/L
(150,000 to 450,000/mmol****)