Analogous to these foundational prostatic carcinoma studies conducted in men where PSMA expressions contribute to patient management, the preliminary findings reported in the current investigation are highly provocative, and suggest that PSMA amplicon detection in hemorrhagic effusions derived for pet dogs might also provide clinically useful information for assisting in the non-invasive and supportive diagnosis of cHSA or other PSMA-expressing cancer cells passively shed into the local microenvironment. The gene discussed is FOLH1; the disease is prostate carcinoma.