Hereditary Nasal Parakeratosis (HNPK) in Labradors is a genetic disorder affecting the corneal layer of the nasal epidermis. Affected dogs show a thickened, dry, and rough nose, often with crusts and fissures, appearing at a young age. Histologically, it is characterized by diffuse parakeratotic hyperkeratosis with retention of nuclei in the stratum corneum and accumulation of proteinaceous fluids. Despite these skin symptoms, Labradors are otherwise healthy. This genetic test is patented and performed by a licensed laboratory.
