Kaplan:FeLV

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Kaplan:FeLV

by shubhamkumar » Thu Apr 12, 2012 10:21 pm
In tests for Feline Leukemia Virus (FeLV), a serious disease of domestic cats, a false positive result indicates that a cat has FeLV, when in fact, it does not; a false negative result indicates that a cat does not have FeLV when, in fact, it does. To detect FeLV most accurately, veterinarians should use the laboratory test that has the lowest proportion of false negative results.

Which of the following, if true, gives the most support to the recommendation above?

A-A certain proportion of results are inconclusive no matter which laboratory test is used.

B-There is no known cure for FeLV, although some chemotherapeutic agents may produce a temporary remission and some antiviral agents may reduce the amount of virus present in infected cats.

C-Cats do not readily submit to having their blood drawn for a test.

D-Upon receiving a positive test result, veterinarians often submit a second sample to be retested for confirmation.

E- All laboratory tests to detect FeLV have the same rate of false positive results.

OA:E
Source: — Critical Reasoning |

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by vikram4689 » Fri Apr 13, 2012 1:08 am
Assertion is that lab has less false -ve results so use this but what about false +ve results. When we know that all labs have same false +ve results then we can conclude that recommended lab is in fact useful for carrying out results
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by GmatKiss » Fri Apr 13, 2012 3:54 am
Why not A ?

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by vikram4689 » Fri Apr 13, 2012 6:04 am
GmatKiss wrote:Why not A ?
Anything that is same with all laboratories is IRRELEVANT because that normalizes when you are trying to choose best.
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