Cal. Bus. & Prof. Code § 18706
(a) Not later than at the weigh-in time, which shall be not more than 30 hours prior to the beginning of the first event, the physician provided for in Section 18705 shall conduct a physical examination of the contestant and certify in writing as to the contestant’s physical condition to engage in the contest or match.
(2) The physician shall determine whether the contestant may have any knowledge, manifestations, symptoms, or prior history of a physical condition that may affect the contestant’s ability to perform or present a potential threat to the contestant’s health as a result of competing in the contest or match. The contestant shall complete a questionnaire developed by the commission. The contestant shall be asked to disclose on the questionnaire any conditions of which the contestant is aware, including, but not limited to, any of the following:
(I) Hematological condition, including manifestations of any unusual bleeding or bruising.
If any condition is disclosed under this paragraph, the physician shall not allow the contestant to compete unless the physician or, at the contestant’s discretion, the contestant’s personal physician, who is licensed to practice medicine in the United States, has conducted a physical examination and determined that the specific condition does not affect the contestant’s ability to perform or present a potential threat to the contestant’s health as a result of competing in the contest or match.