Blood count
Platelets
LOINC 777-3 · /uL
Ranges
Reference range: 150000–450000 /uL
What it is
Platelets are tiny cell fragments that clump together to form clots and stop bleeding when a blood vessel is injured.
Why it matters
The platelet count shows your blood's ability to clot, and abnormal values affect bleeding and clotting risk.
What high values can mean
A higher count can be reactive (after infection, inflammation or iron deficiency) or, less often, from a marrow condition.
What low values can mean
A lower count (thrombocytopenia) can raise bleeding risk and has many causes, from infections to medications.
How to improve it
Treatment targets the cause; the count itself is not changed directly by diet or lifestyle.
Food & lifestyle
No specific food reliably changes platelets; treating iron deficiency can normalise a reactive rise.
Preparing for the test
Part of a complete blood count (CBC); fasting is not required.
When to talk to a doctor
Discuss a high or low platelet count with a doctor, especially a low count with easy bruising or bleeding.
Related markers
Sources
- MedlinePlus (NIH)
- Testing.com (AACC)
Content reviewed on June 26, 2026
Medical disclaimer
This content is for educational purposes only. It is not medical advice and does not diagnose, treat, or prevent any condition. Reference ranges vary between laboratories — always use the range printed on your report and discuss your results with a healthcare professional.
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