MPV blood test
Mean platelet volume
In short
A typical adult MPV result is 7.2 to 11.7 fL (varies by lab machine). A high MPV often means the bone marrow is releasing younger, larger platelets, for example after platelets were used up. On its own it rarely needs action. Always read your result against the range printed on your own report.
The average size of your platelets.
MPV is the average size of the platelets, the cell pieces that help blood clot. Young platelets tend to be larger, so MPV hints at how fast the bone marrow is making them. It is read with the platelet count and means little on its own.
Is my MPV high or low?
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Typical range
| For | Range | Unit |
|---|---|---|
| Adults · varies by lab machine | 7.2–11.7 | fL |
Typical ranges for adults. Labs differ a little, so the range printed next to your result is the one to go by.
If your MPV is high
A high MPV often means the bone marrow is releasing younger, larger platelets, for example after platelets were used up. On its own it rarely needs action.
Common reasons
- Differences between lab machines, since MPV varies widely between labs
- A sample that sat for hours before testing
- Platelets being used up or destroyed, so the marrow sends out young ones
- Diabetes, or heart and blood vessel disease
- Pre-eclampsia, a pregnancy condition with high blood pressure
- Less often: an inherited platelet condition or a bone marrow condition
If your MPV is low
A low MPV means the platelets are smaller than usual. It matters mainly when the platelet count is also out of range, and it often reflects the lab's machine.
Common reasons
- Differences between lab machines, since MPV varies widely between labs
- A recent infection or ongoing inflammation
- Chemotherapy or other treatments that slow the bone marrow
- Less often: a bone marrow that is making fewer platelets
- Less often: a rare inherited condition with small platelets
What can throw it off
MPV depends on the lab's machine and rises the longer a sample waits, so the range on your own report matters most.
Questions to take to your appointment
- 1What does my platelet count show alongside it?
- 2Does this matter if my platelet count is in range?
- 3Should it be repeated?
Read together with
Doctors rarely read MPV alone. These usually sit next to it.
Quick answers
What is the MPV blood test?
MPV (Mean platelet volume): The average size of your platelets. MPV is the average size of the platelets, the cell pieces that help blood clot. Young platelets tend to be larger, so MPV hints at how fast the bone marrow is making them. It is read with the platelet count and means little on its own.
What is a normal MPV level?
For most adults, MPV is typically 7.2 to 11.7 fL (varies by lab machine). Labs differ a little, so the range printed next to your result is the one to go by.
What does a high MPV mean?
A high MPV often means the bone marrow is releasing younger, larger platelets, for example after platelets were used up. On its own it rarely needs action. Common reasons include differences between lab machines, since MPV varies widely between labs; a sample that sat for hours before testing; platelets being used up or destroyed, so the marrow sends out young ones; and diabetes, or heart and blood vessel disease. A doctor reads it together with your other results and how you feel.
What does a low MPV mean?
A low MPV means the platelets are smaller than usual. It matters mainly when the platelet count is also out of range, and it often reflects the lab's machine. Common reasons include differences between lab machines, since MPV varies widely between labs; a recent infection or ongoing inflammation; chemotherapy or other treatments that slow the bone marrow; and less often: a bone marrow that is making fewer platelets.
What can affect my MPV result?
MPV depends on the lab's machine and rises the longer a sample waits, so the range on your own report matters most.
What should I ask my doctor about my MPV?
Questions worth taking to the appointment: What does my platelet count show alongside it? Does this matter if my platelet count is in range? Should it be repeated?
What this page can’t do
It reads each number on its own.
Doctors read results together — ALT with AST, ferritin with hemoglobin, TSH with free T4. A pattern says more than any single flag.
It doesn't know you.
Your age, your medicines, how you feel and your last result all change what a number means.
It doesn't remember.
Close this page and your results are gone. That's on purpose: nothing was ever sent to us.
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