Originally Posted by CliffordK

There seem to be a few. As noted above, there was a Kenyan who used a lot of pork fat (or so he said).

I'm trying to think of "organ meats". Almost all is eaten at home. I don't think it is ever eaten out.

Chicken gizzards, heart, liver, etc are common.
I've had beef tongue, and I presume liver and maybe heart, but those are rare.

I just don't think I've had kidneys or spleen. Likewise uncastrated male meat as a whole (or sex organs) are rarely eaten in the USA.

I'm going to have to track down this Mexican food stand at the heart of the story and try some offal. Hopefully it isn't awful.

It could be testing is more rigorous in the USA now than in the past.

The other thing is this whole WADA thing seems to ignore how concentrated the urine is. This is particularly problematic for cyclists who may finish a race dehydrated, but may impact other athletes too. We don't have enough data on this runner's sample.