In an Agglutination Test, Eight Serial Dilutions to Determine Antibody

question 32

Multiple Choice

In an agglutination test, eight serial dilutions to determine antibody titer were set up: tube #1 contained a 1:2 dilution; tube #2, a 1:4, etc. If tube #6 is the last tube showing agglutination, what is the antibody titer?

• A) 1:32
• B) 1:6
• C) 32
• D) 64
• E) 6

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