Analyze Mean Platelet Volume (MPV) in fL, an index of platelet production kinetics. Reference range ≈ 7.5–11.5 fL (lab- and method-dependent). Low MPV (< 7.5 fL, small old platelets) indicates suppressed marrow production (aplastic anemia, chemotherapy/radiation, recent platelet transfusion, iron-deficiency regeneration, Wiskott-Aldrich). High MPV (> 11.5 fL, large young platelets) indicates peripheral destruction with compensatory turnover or macrothrombocytopenia (immune thrombocytopenia ITP, post-splenectomy, myeloproliferative neoplasms, severe sepsis in recovery, Bernard-Soulier / MYH9, megaloblastic anemia; elevated MPV after acute MI marks platelet activation and adverse prognosis). Optionally enter the platelet count to refine the differential: low platelets + high MPV → peripheral destruction; low + low → underproduction; high + low → reactive thrombocytosis; high + high → myeloproliferative neoplasm. Pre-analytical caveat: platelets swell in EDTA over ~2 h raising MPV, and values are method-dependent (impedance > optical > immuno) — compare within the same lab and analyzer. Derived from Bath 1996, Leader 2012, Vagdatli 2010, and MDCalc. Not medical advice.
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Key facts
Category
Health
Input types
number
Output type
json
Sample coverage
4
API ready
Yes
Overview
The Mean Platelet Volume (MPV) Analyzer interprets an MPV value in femtolitres (fL) using an approximate reference range of 7.5–11.5 fL. An optional platelet count refines the pattern, while the result accounts for common laboratory and sample-handling limitations. This tool is for educational use and is not medical advice.
When to use
Interpret an MPV result as low, within the approximate reference range, or high.
Result
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Combine MPV with a platelet count to distinguish patterns such as reduced production, peripheral destruction, or reactive thrombocytosis.
Review platelet-size findings while considering the laboratory method, analyzer, and time since EDTA sample collection.
How it works
1Enter the reported MPV in fL.
2Optionally enter the platelet count in ×10⁹/L to refine the interpretation.
3The analyzer compares MPV with the approximate 7.5–11.5 fL reference range.
4The result returns the MPV category and, when available, an interpretation based on the MPV and platelet-count pairing.
Use cases
Reviewing a complete blood count result alongside the platelet count.
Comparing low-platelet patterns that may reflect underproduction or peripheral destruction.
Checking platelet-size trends when results come from the same laboratory and analyzer.
Examples
1. High MPV with thrombocytopenia
Clinician reviewing a CBC
Background
A platelet result shows an MPV of 12.5 fL and a platelet count of 45 ×10⁹/L.
Problem
Interpret the combination of a high MPV and low platelet count.
How to use
Enter 12.5 for MPV and 45 for platelet count. Keep decimal places at 1.
{"mpv":12.5,"plateletCount":45,"decimalPlaces":1}
Outcome
The tool classifies the MPV as high and identifies the pattern as large platelets with low platelet count, which may fit peripheral destruction with compensatory production.
2. Low MPV with thrombocytopenia
Healthcare learner studying hematology
Background
A CBC shows an MPV of 7.0 fL and a platelet count of 25 ×10⁹/L.
Problem
Determine whether the platelet-size and platelet-count pattern is more consistent with reduced production or peripheral destruction.
How to use
Enter 7.0 for MPV and 25 for platelet count. Use 1 decimal place.
{"mpv":7,"plateletCount":25,"decimalPlaces":1}
Outcome
The tool classifies the MPV as low and identifies the combination as small platelets with low platelet count, a pattern that may point toward reduced platelet production.
FAQ
What is a normal MPV range?
An approximate reference range is 7.5–11.5 fL, but ranges vary by laboratory and measurement method.
What does a high MPV indicate?
A high MPV reflects larger, often younger platelets and may fit peripheral platelet destruction with compensatory production or macrothrombocytopenia.
What does a low MPV indicate?
A low MPV reflects smaller platelets and may fit reduced marrow platelet production.
Why enter the platelet count?
The platelet count helps refine the pattern: low platelets with high MPV may suggest peripheral destruction, while low platelets with low MPV may suggest underproduction.
Can sample handling affect MPV?
Yes. Platelets can swell in EDTA blood over about two hours, increasing MPV. Compare results using the same laboratory and analyzer when possible.