In gram positive<unk> , more notably Staph aureus, consider sources from skin ulcerations, respiratory tract infections, IV drug use, and indwelling catheters
In gram negative<unk> , common sources include respiratory tract and central venous catheters. In the elderly, consider urinary tract infections.
Obtain blood cultures prior to antibiotic therapy. Indicated for suspected bacterial infections or elevated white count.
Care should be taken to avoid contamination of samples with skin flora
If filling serial samples from same syringe, fill aerobic(blue) tube first to draw out air in the needle before filling the anaerobic(orange) tube
Patients should undergo cardiac echo if staph aureus<unk>  is found to look for endocarditis
Bacteremia
Fever and rash
Neutropenic fever
Burns
Anemia
Pancytopenia
Coagulopathy 
Leukopenia