Aftercare Procedures

What should you expect following surgery or I-131 treatment?


Post-Treatment Care Instructions

Please follow the below instructions for 2 weeks after the procedure:

  • Limit contact with your cat that is closer than arm’s length to 30 minutes a day.
  • Litter must be either flushed or stored. As a precaution, it is best to purchase another litter box and scooper, and discard them after the 2-week period.
    • Flushing: The litter should be labeled as flushable, please make sure yours is. Urine and feces should be scooped and flushed daily.
    • Storing: Dump urine and feces into a bucket daily. The bucket should have a lid.  After the 2-week period, empty the remaining litter into the bucket and store for a period of 3 months.
  • Wash litter box and scooper, and dispose of them in the trash.
  • Hormone level (T4) should return to normal within a month and a half, although some cats can take up to a few months. Your veterinarian should be testing and monitoring these levels to make sure everything is progressing as it should be.

In most cases your cat will not have any side effects.  In some rare cases they may be a bit lethargic and sleep more.  Shedding has also been reported in rare cases.  If this does happen, not to worry, your cat is just adjusting to the new hormone levels.  In 1-3 months, they should be fully cured.

  • Keep the wound clean, and do not wash it. Keep an eye on it to make sure blood or other secretions are not present.
  • Some cats like to scratch at their stitches, which could open the wound. Stitches can be removed after 2 weeks.
  • Make sure your cat drinks plenty of water.
  • Watch for tremors or seizures within the first few days after surgery.
  • In rare cases, the cat may still be hyperthyroid after surgery. In these cases, I-131 treatment can be administered.