rubella HI test
a hemagglutination inhibition (HI) test for rubella, often performed routinely as part of a prenatal workup of the pregnant woman; the presence of a detectable HI titer in the absence of disease indicates previous infection and immunity to reinfection; if HI antibody is undetected, the patient is considered potentially susceptible and is observed accordingly during follow-up.
See Also: hemagglutination inhibition
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Examples: glitazone, GI cocktail, etc.