There's www.clinicaltrialsregister.eu but I'm not sure if it mirrors registrations in clinicaltrials.gov.

Guideline says to take 3 sets (6 bottles total) from at least two punctures if suspected intravascular infection. I suspect we're rarely asked, but that's the advice we give when asked

One puncture, 4 bottles. Pretty standard in Denmark, reasonably low rates of contamination. clinicians trained to ignore Gram positive cocci in clusters 1/4 bottles by comment on the sample and the fact that it doesn't trigger a call from the lab as opposed to other findings