Great piece of work from my colleagues in UHBW and NBT NHS trusts- does time from patient to lab affect blood culture yield? Probably not unless you are one of the streptococci named below. However, still best not to leave them sitting around....
If you're interested in blood cultures: Our study of time to laboratory on yield (adjusted for ward structure and baseline positivity) did not show a global adverse effect except for S pneumoniae, S pyogenes, and S dysgalactiae (2500 beds, England) www.journalofinfection.com/article/S016...