PCT
Plateletcrit (PCT) is the percentage of blood volume taken up by platelets — the small cell fragments that help blood clot. It is calculated from the platelet count and the average size of those platelets in the same panel.
Why it matters: PCT gives a sense of total platelet mass in the blood. It moves with platelet count but can also reflect changes in average platelet size, which sometimes shifts during inflammation or bone-marrow stress.
May increase with:
May decrease with:
What is PCT?
Plateletcrit (PCT) is the percentage of blood volume taken up by platelets — the small cell fragments that help blood clot. It is calculated from the platelet count and the average size of those platelets in the same panel.
What might a high or low PCT mean?
PCT gives a sense of total platelet mass in the blood. It moves with platelet count but can also reflect changes in average platelet size, which sometimes shifts during inflammation or bone-marrow stress.
What is the typical reference range for PCT?
The general-population reference range shown here is 0.15 – 0.35 %. Reference ranges describe the general population and are not a personal target — discuss your results with your physician.
What can affect PCT?
It may be higher with: Thrombocytosis, Inflammation. It may be lower with: Thrombocytopenia, Bone marrow disorders.