Which diagnostic procedure requires the patient to avoid eating fish before the procedure?

A) Thyroid uptake and scan
B) Bone scan
C) Liver scan
D) Kidney scan
E) Brain scan

Thyroid uptake and scan procedures often require patients to follow a low-iodine diet, which includes avoiding fish, because fish can contain high levels of iodine. This is important because the procedure uses radioactive iodine to evaluate thyroid function, and dietary iodine can interfere with the test results.