“…Despite the relatively low number of dogs finally included in the reference population, the nonparametric method of RI determination could be used, as recommended by the IFCC‐CLSI . Because of the low number of dogs in some subgroups, the effects of covariables such as age, sex, and color of face mask may have been underestimated; however, as previously discussed, the reference sample group was still considered representative of the French and Belgian population of DDBs; DDBs aged > 6 years and with black face mask are indeed not frequent …”