Purulent discharge. Unlike the aforementioned discharge types, purulent is almost never part of a normal and healthy wound care regimen. That’s because this form of drainage contains components like pus, white blood cells, dead bacteria and various inflammatory cells, all signs of an infection.
Sanguineous drainage should not be common in wounds after a few hours or days, and this type of drainage later on may be indicative of trauma to the wound site. Serous Drainage. Thin, clear and a little thicker than water, serous drainage occurs during the healing process of the wound.