review ch 9, 10,13 immunology

review ch 9, 10,13 immunology

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on a serial dilution with the following tubes set up, 1:2, 1:4, 1:8, 1:16, 1:32, and 1:64, there is no visible agglutination in the 1:64 tube. what is the titer of the anitbody? 32
if 0.9 mL of saline is added to 0.1 mL of serum, what does the 0.9 mL represents? total volume
if there will be an unavoidable 4-hour delay before a serum sample can be tested, the sample should be: refrigerated between 2-8 degrees celsius
when complement interfers with test results, the serum sample should be: heated to 56 degrees celsius for 30 mins
a patients serum must be added to a series of test tubes, but different volume of serum must be added to each tube. if a single pipette is used, what kind is it? graduated pipette
how would a blowout pipette be labled? TC
the probability that a person with a positive screening test actually has the disease screened for is positive predictive value
what is the sensitivity of the assay? (75%) 90/90+30=120 divide 90/120=0.75 then multiply by 100 which will give you 75%
calculate the assay's specificity (80%) 40/40+10=50 divide 40/50=0.8 then multiply by 100 which will give you 80%
calculate the positive predictive value of the assay 90%

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