Which term describes drugs used to perform medical tests?

• A. Diagnostic Drugs
• B. Antibiotics
• C. Vitamins
• D. Homeostasis

Answer: (A)

Drugs used to perform medical tests are called diagnostic drugs. Their purpose is to help assess how the body or a specific organ is functioning and to reveal information during procedures, imaging, or laboratory tests. They’re selected to illuminate anatomy, physiology, or pathology rather than to treat a condition, which is why they’re labeled diagnostic. For example, contrast agents used in imaging studies or substances given to provoke a test response fall into this category.

Antibiotics are used to treat infections, not to conduct tests. Vitamins are supplements that support nutrition, not diagnostic purposes. Homeostasis refers to the body's tendency to maintain internal balance, not a drug.