Cat Kidney Disease Early Detection

Chronic kidney disease affects a third of cats over 12 years old — early detection through regular screening allows intervention that slows progression and maintains quality of life.

Key Facts

Chronic kidney disease (CKD) is the most common cause of death in cats over 7 years old in developed countries.
By the time clinical signs appear, cats have typically lost 70% or more of kidney function.
SDMA (symmetric dimethylarginine) blood testing can detect kidney disease up to 17 months earlier than traditional creatinine measurement.
Dietary phosphorus restriction and increased water intake are the most effective management strategies for slowing CKD progression.
Cats with CKD experience nausea, reduced appetite, and lethargy — welfare impacts that respond to appropriate medical management.

Welfare Considerations

CKD in cats is a welfare crisis that unfolds slowly and silently. By the time an owner notices their cat is unwell, significant irreversible damage has already occurred. The welfare case for early screening is compelling: detecting kidney disease before clinical symptoms allow interventions — dietary management, increased hydration, blood pressure treatment — that meaningfully extend the period of good quality life. Annual blood testing for cats over 7 is one of the most impactful preventive welfare investments a cat owner can make.

What You Can Do

Ask your vet to include SDMA in annual blood tests for cats from age 7 onwards.
Encourage cats with kidney disease to drink more through wet food, fountains, and multiple water stations.
Feed kidney-supportive diets as prescribed by your vet — phosphorus restriction genuinely slows disease progression.
Monitor your cat for early warning signs: increased thirst and urination, reduced appetite, and weight loss.