This Sucks guys...I am sorry for everyone. My blend is based on the 5013 but tweaked slightly. So though PMI was helpful in testing and such they have already hinted that since I don't use one of their commercial diets they really can't help me or confirm that the issue came from them...one of those once it is out of our control and Q.C. we don't know what happens to it type responses. Hopefully those of you that use "off the shelf" blends will get more concrete answers.

I would suggest that anyone feeding these diets either stop or closely watch their rats for any unexplained deaths till we get some confirmation either way.