Why do you say pseudo blinding, it seems like it is blind in that the author doesn’t know if he is taking the test or not.
Now you can argue that there isn’t enough time between samples, or he needs more subjects but he was blind to whether he was taking it that day or not.
If the author felt good on a particular day for whatever reason, and then learned they had taken the active substance, their reports are contaminated forever. It works the other way, too. It works any way you slice it.
Now you can argue that there isn’t enough time between samples, or he needs more subjects but he was blind to whether he was taking it that day or not.