Over a 3 week period, PSMA+ PIP tumors exhibited increased uptake compared to kidneys and PSMA- flu tumors, and while uptake in both PIP tumor and kidneys decreased over this time, the PIP tumor:kidney ratio remained at 2-3:1 (P<0.05 at 2 week time point by t-test, non-significant at other time points). Here, FOLH1 is linked to neoplasm.