Table 1.

The steps for interpreting the platelet portion of a complete blood count.

1. Interpret the total platelet count relative to the reference interval.
2. Examine the MPV and compare to the reference interval.
3. Examine the PDW and compare to the reference interval.
4. Examine the platelet distribution histogram for evidence of interferences. Take steps to correct these and reassess Steps 1-3 based on the revised results.
5. Examine the IPF and compare to the reference interval.
6. Correlate the numerical parameters with platelet morphology.
7. Correlate platelet results with rbc and wbc parameters and conduct clinical assessment of the patient's values.