I am not sure; I would like to think it was the t-cell test, but it might have been the immunoglobulin test. I know it was some months before the test was made available.
Israel: Iran ‘10 Weeks Away’ from Acquiring Enough Material for Nuke
JERUSALEM, Israel – Israeli Defense Minister Benny Gantz warns that Iran is only 10 weeks away from acquiring enough material to make a nuclear bomb. . . . .