Supplement Table 2

Auscultation, basic echocardiographic and laboratory variables in 96 healthy cats and 39 cats with hypertrophic cardiomyopathy (HCM)</p

Supplement Figure 1

The stability of cardiac troponin I (cTnI) concentration in serum samples from three cats with hypertrophic cardiomyopathy (HCM) after storage in the dark at 20°C</p

Supplement Table 1

Auscultation, basic echocardiographic and laboratory variables in 96 healthy Birman, Domestic Shorthair (DSH), and Norwegian Forest (NF) cats</p

Supplement 1 Stability study

The concentration of cTnI decreased in serum samples stored at 20°C. After three days, the mean decrease was 4% in comparison with the initial value. Mean decrease was 14% after 5 days and 20% after 7 days (Supplement Figure 1). The cTnI concentration changed from -1 to 5% after three freeze-thaw cycles.</p