TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Implant SPECIES OBSERVED : Human - woman DOSE : 222 ug/kg SEX/DURATION : female 39 week(s) pre-mating TOXIC EFFECTS : Reproductive - Fertility - female fertility index (e.g. # females pregnant per # sperm positive females; # females pregnant per # females mated) REFERENCE : CCPTAY Contraception. (Geron-X, Inc., POB 1108, Los Altos, CA 94022) V.1- 1970- Volume(issue)/page/year: 18,411,1978