Reply To: highest IGF level recorded? Written by LoerronR on . Posted in › HGH Forums › IGF Forum › highest IGF level recorded? › Reply To: highest IGF level recorded? January 8, 2018 at 12:12 pm #2626 LoerronRParticipant Oh wow, that’s a nice score! What was the brand that you were using? Were you using slin when reaching it?