107 Preservation of Normal Concentration of Pituitary Gonadotropins Despite Achievement of Normal Serum Testosterone Levels in Hypogonadal Men Treated with 4.5% Nasal Testosterone Gel (Natesto). (1st February 2018) - Conners, W.; Morgentaler, A.; Guidry, M.; Westfield, G.; Bryson, N.; Goldstein, I.