agglutination titer


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titer

 [ti´ter]
the quantity of a substance required to react with or to correspond to a given amount of another substance.
agglutination titer the highest dilution of a serum which causes clumping of microorganisms or other particulate antigens.

agglutination titer

the highest dilution of a serum that will produce clumping of cells or particulate antigens. It is a measure of the concentration of specific antibodies in the serum.

agglutination titer

The highest dilution of a serum that will cause agglutination (clumping) of the antigen being tested.
See also: titer

titer

the quantity of a substance required to react with or to correspond to a given amount of another substance.

agglutination titer
the highest dilution of a serum which causes clumping of microorganisms or other particulate antigens.
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References in periodicals archive ?
Brucella agglutination titer [greater than or equal to] 160 in one or more serum specimens obtained after onset of symptoms).
Serologic investigation in serum revealed high agglutination titers against brucella (1:1280).
Serum cryptococcal latex agglutination titers also should be drawn; these are 87% sensitive in HIV-negative patients (Ross & Katz, 2002).
A result is positive when there is a four-fold increase in tularemia agglutination titers or when there is a single titer of 1:160 or greater.
Pyrogenes serogroup was identified in one third of positive samples from Moheli and was associated with the highest agglutination titers (Figure).
Agglutination titers for RHDV (Ast/89) and RHDV-N11, by human blood type, Spain Human blood type ([dagger]) Virus O A RHDV (Ast/89) 32,768 16,384 RHDV-N11 <2 <2 Human blood type ([dagger]) B AB RHDV (Ast/89) 131,072 131,072 RHDV-N11 2,048 2,048 * RHDV, rabbit hemorrhagic disease virus.
Serologic testing found that the highest agglutination titers were directed against L.
The 4 plasma samples testing positive by Western blot had higher immunofluorescence assay titers on MT2 (HTLV-1) cells than on C19 (HTLV-2) cells and high particle agglutination titers (Table 1).