Answer Posted / harish chandra
WIDAL test can be performed by two method
1. Slide Agglutination
2. Tube agglutination
tube agglutination is more accurate in comparison to slide
agglutination you can go upto 1:1280 titre but in case of
slide you are restricted to 1:320 titre only but it is more
rapid result comes within 5 min
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