Utilità clinica del test con GnRH Entusiasmo, negli anni '90 Fujisawa M et al The significance of GnRH test for predicting fertility after varicocelectomy Fertil Steril 1994;61:779-82 Nessun valore in clinica, successivamente O'Brien J et al Does the GnRH test stimulation test predict clinical outcomes after microsurgical varicocelectomy.