How often must diver medical exams typically be renewed?

• A. Monthly
• B. Weekly
• C. Annually
• D. Every five years

Answer: (C)

Regular medical clearance is essential to ensure a diver remains physically prepared for the rigors and risks of diving. Health can change over time, so the medical exam is renewed annually, with the certificate typically valid for 12 months. This period balances practicality with safety: it allows ongoing screening for conditions that could raise the risk of decompression illness, pulmonary issues, cardiovascular problems, or ear and sinus barotrauma, while keeping the requirement proportional to the diver’s exposure and workload. In the ADCI context, a diver must hold a current medical certificate to work, and once the year elapses, a new evaluation and re-authorization are needed before returning to diving. Shorter intervals like monthly or weekly aren’t necessary for routine checks, and a span as long as five years could miss health changes that affect safety.