Abstract
An assessment of the Coulter model S automatic blood counter has been carried out. The standard deviations for the haemoglobin concentration, haematocrit, red cell count, and white cell count are, respectively, ± 0·15 g/100 ml, ± 0·45%, ± 0·04 m/c mm, and ± 0·47 thous/c mm. These results are clearly more accurate than careful manual estimates, performed for comparison on the same samples. Details of the comparisons are presented. A comparison is also made with routine daily estimations.
`Carryover' from one sample to the next was found to be about 2%, and tests in the ranges likely to be found in practice showed good linearity for the haemoglobin estimation, haematocrit, red cell count, and white cell count. A brief account of instrument failures is given.
The performance of the Coulter model S compares well with that of other automated equipment for which detailed evaluations are available.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- BRECHER G., SCHNEIDERMAN M., WILLIAMS G. Z. Evaluation of electronic red blood cell counter. Am J Clin Pathol. 1956 Dec;26(12):1439–1449. doi: 10.1093/ajcp/26.12.1439. [DOI] [PubMed] [Google Scholar]
- Barnard D. F., Carter A. B., Crosland-Taylor P. J., Stewart J. W. An evaluation of the Coulter model S. J Clin Pathol Suppl Coll Pathol. 1969;3:26–33. doi: 10.1136/jcp.s2-3.1.26. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lappin T. R., Lamont A., Nelson M. G. An evaluation of the autoanalyzer SMA-4. J Clin Pathol. 1969 Jan;22(1):11–18. doi: 10.1136/jcp.22.1.11. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nelson M. G. Automation in the laboratory. J Clin Pathol. 1969 Jan;22(1):1–10. doi: 10.1136/jcp.22.1.1. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nelson M. G. Multichannel continuous flow analysis on the SMA-4--7A. J Clin Pathol Suppl Coll Pathol. 1969;3:20–25. doi: 10.1136/jcp.s2-3.1.20. [DOI] [PMC free article] [PubMed] [Google Scholar]