Changes

In a 2004, AquaBounty Technologies tested the muscle and skin of diploid and triploid control (non-GE) and GE salmon for the following: growth hormone (GH) and insulin like growth factor 1 (IGF1), estradiol, testosterone, T3, T4, and 11-ketotestosterone. The tests were performed on a total of 73 fish (43 control and 30 GE salmon). The test's detection limit for growth hormone was 6.24 ng/g. All of the fish tested below the detection limit for growth hormone. From this data (or lack thereof), the FDA concluded "No differences were observed in levels of growth hormone in edible tissues at the level of quantitation for the analytical method." Michael Hansen compares this to a cop using a radar gun that cannot detect speeds below 110mph to compare a car going 30mph and one going 90mph determining that there was no detectable difference in the speeds of the cars.<ref>Jill Richardson, Phone interview with Michael Hansen, September 7, 2010.</ref> No differences in levels of growth hormone were observed because no growth hormone was observed at all.(A similar problem occurred in tests of T4 levels; only 2 fish per group tested above the detection limit for T4.)