test that uses whole organisms to find serum antibodies.
A direct agglutination test (DAT) is any test that uses whole organisms as a means of looking for serum antibodies. The abbreviation, DAT, is most frequently used for the serological test for visceral leishmaniasis.[1]
^Sundar S, Singh RK, Maurya R, et al. (2006). "Serological diagnosis of Indian visceral leishmaniasis: direct agglutination test versus rK39 strip test". Trans R Soc Trop Med Hyg. 100 (6): 533–7. doi:10.1016/j.trstmh.2005.08.018. PMID 16325874.
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