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. 1971 Jul;22(1):66–78. doi: 10.1128/am.22.1.66-78.1971

Automation of a Hemagglutination-Inhibition Test for Parainfluenza 3 Antibodies in Bovine Sera 1

Donald W Webert 1, Daniel Cohen 1,2
PMCID: PMC377378  PMID: 4329434

Abstract

An automated hemagglutination-inhibition (HI) test for the “shipping fever” strain (SF-4) of parainfluenza 3 antibody in bovine sera was developed and compared to manual tube and microtiter test procedures. The automated system operating at 60 samples per hr provided the most test results per specified time period, and the manual tube test provided the least. The manual microtiter test and the automated system at 40 samples per hr, falling between the two above procedures, were comparable in the number of sera that could be titrated in 1 day by one technician. There was little difference between automated and manual test reproducibility when measured at the twofold titer one-dilution difference level. However, the automated system titrated a higher number of sera at the same titer on repeat runs than either of the manual test procedures. The automated one-quartile difference reproducibility (each twofold dilution subdivided into 4 units—“quartiles”) was equal to the manual test one-dilution difference reproducibility. The standard deviation of the per cent variation from the mean of paired serum titers for 40-sample-per-hr runs ranged from ±3.49 to ±5.36%. The manual and automated systems were of comparable sensitivity in their detection of negative sera.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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