Transdermal patches (adhesive patches placed on the skin) may also be used to deliver a steady dose through the skin and into the bloodstream. Testosterone-containing creams and gels that are applied daily to the skin are also available, but absorption is inefficient (roughly 10%, varying between individuals) and these treatments tend to be more expensive. Individuals who are especially physically active and/or bathe often may not be good candidates, since the medication can be washed off and may take up to six hours to be fully absorbed. There is also the risk that an intimate partner or child may come in contact with the application site and inadvertently dose himself or herself; children and women are highly sensitive to testosterone and can suffer unintended masculinization and health effects, even from small doses. Injection is the most common method used by individuals administering AAS for non-medical purposes. 
Exocrine pancreatic insufficiency means there is a decrease or lack of digestive enzymes being produced by the pancreas. In kitties with the disorder, proteins, starches and fats from the diet aren’t broken down sufficiently to be absorbed through the intestinal wall. This means nutrients can’t get into the bloodstream to supply nourishment to the body’s tissues. Much of the food that is eaten remains undigested in the GI tract and ultimately leaves the body in feces. If left untreated, a cat with EPI can literally starve to death despite how much food is consumed.