Can Cats Fully Recover from FIP? A Guide to the 12-Week Observation Period After Treatment
- BasmiFIP Philippines
- Oct 6
- 3 min read
Feline Infectious Peritonitis (FIP) used to be considered a death sentence for cats. But thanks to modern research and the development of antiviral drugs such as GS-441524, thousands of cats worldwide—including here in the Philippines—have recovered and returned to normal, happy lives.
However, FIP recovery doesn’t end the moment treatment is completed. After the standard 84 days of therapy, cats must go through a 12-week observation period. This stage determines whether your cat has truly recovered or is at risk of relapse.
This article explains what the observation period is, the signs of healthy recovery, red flags to monitor, and practical tips for cat parents to support their feline’s healing.
What Is the Observation Period for FIP Cats?
The observation period is the 12 weeks following FIP treatment, during which the cat must be closely monitored.
Many cat parents feel relieved once FIP symptoms disappear, especially when blood tests improve. But there’s still a small chance of relapse. That’s why veterinarians and FIP support communities emphasize the importance of this stage.
How Long Should the Observation Period Last?
In general, 12 weeks (about 3 months) is the recommended standard. During this time, cats should be monitored both at home and through scheduled veterinary checkups:
Day 30 – First blood test to confirm major improvements in liver, kidney function, and blood protein levels.
Day 60 – Second blood test to ensure the condition is stable with no sign of inflammation returning.
Day 84 (end of treatment) – Third blood test and final evaluation of therapy. If results are normal, the cat officially enters the post-treatment observation stage.
In addition to medical checkups, daily home monitoring is essential. Track appetite, body weight, activity levels, and temperature every day.
Red Flags: Signs of FIP Relapse
Relapse can occur even if a cat appears healthy at first. Be alert to these warning signs:
Sudden loss of appetite
Rapid weight loss
Recurring fever or unstable temperature
Lethargy, excessive sleeping
Fluid buildup in the abdomen or chest
Neurological symptoms (seizures, unsteady movement, sudden blindness) or ocular signs (cloudy or inflamed eyes)
How to Support Your Cat During the Observation Period
Optimal Nutrition – Feed protein-rich, easily digestible food; avoid raw foods that carry risks.
Safe, Stress-Free Home – Provide comfort, warmth, and a calm environment.
Daily Monitoring – Track appetite, weight, and activity daily.
Cleanliness – Keep the litter box clean; limit contact with other cats to avoid FCoV spread.
Vet Checkups – Follow up with blood tests on days 30, 60, and 84.
Conclusion
Can cats fully recover from FIP? Yes. Thousands of documented cases prove that with proper GS-441524 treatment, cats can recover completely.
But the 12-week observation period is the crucial stage that ensures recovery is permanent. If a cat stays stable, active, and symptom-free throughout, the risk of relapse becomes very low.
As a cat parent, your role is to monitor, provide the best nutrition, maintain a safe environment, and act quickly if relapse signs appear. With care and discipline, the hope for FIP cats is now brighter than ever.
FAQ
Q: Can cats fully recover from FIP?Yes, with antivirals such as GS-441524, many cats can fully recover.
Q: How long is the observation period after treatment?Around 12 weeks, with key blood tests on days 30, 60, and 84.
Q: What are signs of relapse?Loss of appetite, fever, weight loss, fluid buildup, or neurological/ocular symptoms.
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