The Reproducibility and Constancy of the Platelet Counts

Abstract

Direct platelet counts made with the phase microscope on venous blood collected in siliconed test tubes reflected the circulating platelet level. Unavoidable field, pipet, and chamber errors accounted for the 11% single-count errors, which can be reduced by doing multiple counts. Platelet counts on capillary blood from a finger puncture were subject to 24% error and the counts were about 2 1/2% lower than on venous blood; this was probably due to a variable platelet loss in the puncture wound. Other methods of platelet counting are reviewed. In 13 subjects the platelet levels varied greatly between individuals, but the individual platelet counts showed only minor variations during a 5-mo period.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1953
Accession Number
AD0005258

Entities

People

  • Eugene P. Cronkite
  • George Brecher
  • Marvin Schneiderman

Organizations

  • Naval Medical Research Center

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Analysis Of Variance
  • Biomedical Research
  • Blood
  • Blood Cells
  • Blood Counts
  • Blood Platelets
  • Cell Count
  • Cells
  • Counting Methods
  • Microscopes
  • Observers
  • Reproducibility
  • Standards
  • Statistical Analysis
  • Technical Information Centers

Readers

  • Educational Psychology
  • Regression Analysis.
  • Trauma Surgery or Emergency Medicine.