1. Do not take lipiodol angiography, angiography and cholangiography within one month before the examination, and do not take traditional Chinese medicine, potassium iodide and Lugol's solution.

2. Do not rub iodine for two weeks before the inspection, and do not eat foods with high iodine content such as kelp, laver, jellyfish, laver, marine fish, shrimp, clam, cabbage and lettuce.

3. Two weeks before the examination, Huasu tablets, throat lozenges containing iodine, grass coral, watermelon frost, cortisone, sulfonamides, sex hormones, contraceptives, antituberculosis drugs, thyroxine tablets and antithyroid drugs such as tabazole and propylthiouracil should be stopped.

4. Pregnant women should not have manicure examination, and lactating women should stop feeding for two days after taking medicine.

In the morning, the patient needs an empty stomach.

Second, 13 1 iodine for the treatment of hyperthyroidism.

1. Take 13 1 iodine and fast that day. Take 13 1 iodine for two hours before eating.

2. Pay attention to rest after taking 13 1 iodine to avoid overwork, emotional excitement, cold and gastroenteritis, so as not to induce hyperthyroidism crisis.

3. After taking 13 1 iodine, it is forbidden to take iodine-containing drugs and fast all kinds of seafood within one month, so as not to reduce the therapeutic effect. Anti-thyroid drugs are prohibited in general patients. In severe cases, you can take 13 1 iodine for 2-3 days before taking short-term antithyroid drugs to relieve symptoms.