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HMS, TIP EQ-Bank 117 MC

Diuretics are classified as masking agents.

How do they help athletes avoid detection of other banned substances?

  1. They increase urine output, diluting the concentration of other drugs in the sample
  2. They speed up the breakdown of drugs in the liver so they leave the body before testing
  3. They bind to other drugs so that laboratories cannot identify them
  4. They reduce urine production so that the athlete cannot provide a sample
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\(A\)

Show Worked Solution
  • A is correct: Diuretics increase urine production. This dilutes the urine, lowering the concentration of other banned substances so they are harder to detect.

Other options:

  • B is incorrect: Diuretics act on the kidneys, not on how quickly the liver breaks down drugs.
  • C is incorrect: Diuretics do not bind to other substances. They only affect fluid output.
  • D is incorrect: Diuretics have the opposite effect, increasing urine production.