Which statement correctly lists the general requirements for injections?

• A. Sterile, pyrogen-free, particle-free if solution, pH of blood, and isotonic if possible
• B. Non-sterile injections are acceptable
• C. Non-pyrogen-free injections are acceptable
• D. Colorless and odorless injections

Answer: (A)

Injections must meet safety standards that protect the patient because parenteral administration bypasses natural barriers. They need to be sterile to prevent infection, pyrogen-free to avoid fever, and free of particulates to prevent embolic or tissue irritation. The solution should be close to the body's own fluids in osmolarity and pH, meaning it is isotonic with blood and has a physiologic pH to minimize damage to cells and tissues.

The statement that includes sterile, pyrogen-free, particulate-free (if it’s a solution), pH compatible with blood, and isotonic if possible covers these critical requirements. Non-sterile or non-pyrogen-free injections are unsafe because they can cause infection or fever. Color, odor, or other appearance traits are not determining safety for injections, since many legitimate preparations may vary in color or scent and still be safe or unsafe; the key factors are sterility, pyrogen control, particulates, and physiologic compatibility.