• Your cat has been given radioiodine (I131) for the treatment of hyperthyroidism. It has been isolated while most of the radioiodine has been excreted from its body. A low level of radioiodine still exists in your cat, but this level is below that which is necessary for isolation from humans. Because some radioactivity will still be present in your cat for the next few weeks, it is important for you to abide by the following precautions for the next two weeks:

    1. Do not hold your cat or allow it to sit in your lap for an extended period of time (>15 minutes).

    2. Do not allow your cat to sleep in the room with you.

    3. Provide a litter pan for your cat’s urination and defecation. Dispose of the used litter and waste daily. Use a garbage bag, and deposit the litter in an outdoor receptacle. Wear disposable gloves when handling the litter.

    4. Immediately wash your hands after contact with your cat or your cat’s litter.

    5. Confine your cat to your home at all times.

    6. Do not allow any person under the age of 18 years to have contact with your cat.

    7. Do not allow any pregnant person to have contact with your cat.

    Important: Should you be unable to abide by the preceding conditions, your cat should be hospitalized until radiation levels are below 2 mR/hr. This additional hospitalization could last up to two weeks.
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