KM Thanks for the post. Yes, some testing facilities only go to 40hz, some are equipped to go to 150hz or more though but a are less common.
Also, these tests are only about 50% successful in catching changes in brainwaves, even in people with outward symptoms of traditional epilepsy. This is why I feel we need a good number of people suffering from these LED screens to get tested. If about 10% get a positive result during the testing, that's enough to confirm this is indeed the issue. It will also mean manufacturers of video cards and displays will have to address the issue, since it will clearly be a medical issue at that point.
Also, if people do decide to get tested, make sure you are currently experiencing symptoms. The whole point is to try to reproduce the issue. So if you are well rested and have been using a problem-free monitor setup, you will probably test negative. You want to get tested when you are feeling the most symptoms as the goal here is to reproduce the symptoms in the clinical setting and be able to record the results.
Most clinics will instruct you do this, for example they might suggest to arrive at the test site while tired if possible. But some don't go through this extra step of informing people so I figure I would mention it here.
Also, for people considering getting tested, this is for those having significant symptoms as those are the people most likely to test positive in a clinical setting. So if after being exposed to a problematic screen you have mood changes, brain fog, clenching of jaw/teeth, sensitivity to other light sources, sensitivity to striped patterns, nausea, feelings of deja vu, impulsive thoughts, etc., then you would be best suited to get tested.