Scandal in the fiber world!

I just read that one week ago (16 October), a yarn recall was issued for six yarns that do not contain the cashmere that their labels claim they do. As far as I can tell the recall is not nationwide (not yet, at least) but is being organized by a Philadelphia-area yarn store, the Knit With, that had the yarns tested by two different scientific labs. (The link above leads to the recall letter and to the documents provided by the labs.)

The yarns in question are Knitting Fever Cashmereno DK, Debbie Bliss Cashmerino Aran, and Debbie Bliss Cashmerino Baby; these were all found to contain 0% cashmere. Also on the list are three yarns from Noro (Amagi, Cash Iroha, and Lotus), which "at best, have only slightly more than half of the labeled cashmere content" (according to the recall notice).

I'm curious to know why the yarn shop felt the need to have the yarns tested in the first place. I mean, what tipped them off that something was fishy? Do they have staff or clients who have princess-and-the-pea-type sensitivity, so that they can feel a yarn and know what's in it?

I'm not sure how I feel about this whole recall, since I did just finish knitting and seaming a sweater made out of Debbie Bliss cashmerino baby (though I'm still kind of nervous about blocking it and adding the buttons). The yarn I worked with felt very soft and cozy, and to be honest I don't think I would know if it did or didn't contain the whopping 12% cashmere I was expecting. This yarn was purchased three years ago, so maybe it's fine (the recall doesn't list manufacture dates for the yarns in question). Or maybe it's not. I think I'm just not going to worry about it.