The only means of determining a cause and effect relationship using any culture technique is to recover the same organism in a patients wound or abscess.
But I must mention there is NO EVIDENCE that supports the notion bacterial gear contamination causes PIP.
First while PIP is relatively common site infections are NOT.
Second because the responsible organisms are almost always Staph and Strep, without sub-typing, proving the UGL is responsible party, rather than the patients poor technique, approximates the impossible.
I know bro lore dictates the cause of PIP is the "ester" being used but again NOTHING supports this contention either.
So what does cause PIP you ask? Look no further than the AAS powder guys.
Now Jim how can that be after all my source double or triple filters their powders.
Ok right, assuming that does in fact occur (and the better UGLs do exactly that) the etiology is the number of times the final product is distilled, precipitated and reconstituted.
Ya see each time this triple phase process is performed a variable quantity is "lost" in the primary solution, and that lowers the WEIGHT available for SALE.
I'll give one example easily detected using MS or HPLC
