Depending on physician orders, DuoDerm dressings can be used on stage 1, 2, 3 and 4 bed sores. The length of time a DuoDerm patch may be left on a wound is determined by the amount of moisture in the wound. Under normal conditions, DuoDerm can be left on the wound for 3-4 days.ecause DuoDerm essentially creates a moisture barrier, they should not be used on people with infected bed sores. Under normal circumstances, wounds covered with DuoDerm are likely to develop a strong odor after several days. The odor is consider to be a normal part of of the product.
Nicotine is detectable in a urine test for 2-4 days. A blood test will detect nicotine for up to 2-4 days. A saliva test will detect nicotine from 1-4 days. Nicotine, like many other drugs, can be detected with a hair follicle drug test for up to 90 days.
Blood Test for Nicotine. The answer to the question as to how long does nicotine stay in your blood rests on the fact that it gets transformed into a metabolite called cotinine which mixes in the blood and affects the body.