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Updated: Aug 11, 2026

05:59
Determining the Reactivity and Titre of Serum using a Haemagglutination Assay
Published on: January 29, 2010
[Screening carriers of the HBs-antigen with the use of a "group" passive hemagglutination reaction test]
Abstract:
The passive hemagglutination test (PHAT) with a mixture of tested sera is suggested to be used in screening of HBsAg carriers. A pool of 4 sera is used in a test, diluted twofold with physiologic saline; thus the end dilution of each serum is 1:8. Examinations of 296 serum samples by the current and the 'group' methods have yielded the results that coincide. The 'group' PHAT method cuts down the consumption of the diagnostic agent 4-fold and is less labor-consuming.
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