The fraction of blood volume made up of platelets.
Plateletcrit, or PCT, is the fraction of your blood volume taken up by platelets, similar in idea to how haematocrit describes red cells. It combines the platelet count and the average platelet size into one number.
It is calculated automatically by haematology analysers as part of the complete blood count and is reported as a percentage.
Plateletcrit reflects the total platelet mass in your blood. A high value can occur when the platelet count is raised, and a low value when platelets are reduced, helping summarise platelet status at a glance.
On its own it is rarely used to diagnose, but it adds to the picture from the platelet count and size indices, and has been studied as a marker in inflammation and clotting risk.
Aniva reads your result against research-backed ranges, not just the lab's wide normal. The reference shown below is specific to this biomarker.
Typical adult guidance, analyser dependent:
| Result | Range |
|---|---|
| Plateletcrit (PCT) | 0.17 to 0.36 % |
This index has no single agreed range and differs between analysers. Read your result against your laboratory's interval.
Platelet clumping, delayed analysis, and EDTA effects can distort the value. It is not comparable between analyser brands and is not used alone to guide treatment.
Read alongside the platelet count, mean platelet volume, and platelet distribution width.
One annual membership, 100+ biomarkers, every result explained in plain language with a personalized action plan and concierge guidance.
