Over 9.5 million urine drug tests were positive in the U.S. workforce in 2015. The rates increased to 4% of workers tested in 2015 versus 3.9% the year before. Workplace drug screening is primarily limited to drugs with the potential for abuse, including some prescription drugs, and alcohol.
The most frequently reported side effects with this drug are edema, acne, site pain, injection site erythema, cough or dyspnea during or immediately after injection. The most frequently reported side effects with testosterone topical are skin reaction (16.1%) and allergic contact dermatitis (up to 37%). Very common (10% or more): Testosterone topical: Skin reaction (16.1%), burn-like blisters (12%), itching, allergic contact dermatitis (up to 37%)
Testosterone directly effects muscle growth by binding to receptors on the surface of muscle cells and amplifying the biochemical signals in muscle tissue that result in protein synthesis. Testosterone also increases levels of another growth factor, called growth hormone, that the body releases in response to exercise. Like testosterone, growth hormone increases protein synthesis and can result in increased muscle growth.