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The platelet estimate: is it being ignored?

J S Weinstein, J D Foster, L E Stinson

Postgraduate Medicine

|August 1, 1980

Summary

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The routine complete blood count (CBC) platelet estimate is often underutilized, leading to unnecessary quantitative platelet counts. This costly test should be reserved for abnormal estimates to improve laboratory efficiency.

Area of Science:

Hematology
Clinical Pathology
Laboratory Medicine

Background:

The complete blood count (CBC) includes a manual platelet estimate.
The utility of this estimate in guiding further testing is unclear.

Purpose of the Study:

To evaluate the utilization of the platelet estimate in routine CBCs.
To determine if the platelet estimate guides the ordering of quantitative platelet counts.

Main Methods:

Review of laboratory requisition slips and results over a one-month period.
Comparison of manual platelet estimates with quantitative platelet counts.

Main Results:

Platelet estimates were not consistently used as intended.
Quantitative platelet counts were frequently ordered concurrently with CBCs.

Related Experiment Videos

Manual platelet estimates and quantitative counts showed agreement in 96% of cases.

Conclusions:

The current practice of ordering quantitative platelet counts alongside CBCs is often unnecessary.
The platelet estimate is a reliable indicator for abnormal platelet levels.
Reserving quantitative platelet counts for abnormal estimates can reduce costs and improve laboratory resource allocation.