Dna Testing Failing ?

[steppenwolfstaffords]

I am interested to learn more about DNA tests and how accurate they are.

ive read that a dog that was DNA cleared and Cleared by parentage of an eye condition has failed an eye exam.

I was wondering what the point is of DNA testing if a dog can pass it but really not be clear having failed an actual exam.

Thanks in advance for your replies.

Edited June 14, 2013 by SteppenwolfKennels

[Sandra777]

May be an obvious question but is the DNA test for the exact condition that the dog physically displays.

There are many forms of cataract in the world :D

[dancinbcs]

DNA tests are definitely accurate for the specific diseases they test for. Of course human error in recording the results can occur, just as it can in any other field that involves someone writing something down. Errors like that have occurred but are rare and can be found by re-checking of the results. Much more common is that the sire of the litter is not who the breeder thought it was or that someone has lied about test results. Never rely on someone telling you results. You need a copy of them yourself.

Also clinical eye exams can miss dogs affected with some conditions. The clinical signs can be so small as to not be detectable but when the dog is DNA tested it is found to be genetically affected.

[*kirty*]

Also there are different kinds of conditions. Eg a dog could be clear of congenital cataracts but then develop inherited cataracts or diabetic cataracts. Also different kinds of PRA, etc.