Sending Appropriately Collected Specimens to the Laboratory Before Antibiotic Therapy

Sending appropriately collected specimens to the laboratory before antibiotic therapy is initiated is important because:

A) pathogenic bacteria could be hard to recover because of the effects of the antibiotic.
B) collection of specimens from around the wound area can result in contamination of the culture.
C) collection of a sputum specimen contaminated with saliva could yield a culture result that reflects normal mouth flora.
D) All of the above are correct.