Multiple choice

Increased serum creatinine level is a sign of _________.

  1. head damage

  2. kidney damage

  3. lung damage

  4. heart damage

  5. none of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Creatinine is a waste product produced by muscles and filtered out of the blood by the kidneys. High levels in the blood indicate that the kidneys are not filtering effectively.