Biomarker education
Platelets: What It Measures & Why People Track It
Also called: Platelet count, Thrombocytes
Platelets help blood clot and are counted as part of a complete blood count.
General biomarker education — not personalized medical advice. Learn more
Result on your report
IllustrativePlatelets
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Range: Low – High
What it generally measures
Labs count the number of platelets present per volume of blood.
Common units on reports: K/µL
Why people track it over time
Platelet counts are often reviewed with the rest of the CBC and can shift for many everyday reasons, which a clinician can help interpret.
Changes over time do not by themselves establish a diagnosis. Learn more
Questions you might ask a healthcare professional
Questions to bring
IllustrativeRelated markers
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Reference range
Platelets reference range
What the range on your report means for this marker.
Panel guide
Related panel guide
Understand the broader panel this marker appears on.
Related biomarker
White blood cell count
WBC count is part of a complete blood count (CBC) and reflects the number of white blood cells in a sample.