That's a really interesting point. I had clicked on this thread originally because it intrigued me, not because I believed I have hyperspermia. Then, when I posted those measurements in my last post, I though that may possibly cross the threshold. I had not measured over a longer time but 48hr may have been enough to break the 6.5ml threshold.
But go forward a few years, my wife and I had two children without any difficulty, avoiding any kind of hormonal contraception between the first two, then she went on depot-provera. After a slightly longer gap we decided to have a third, she didn't get her injection topped up again and yet, after the normal time for things to return to normal, she still wasn't pregnant and was starting to worry. As part of the process to investigate this, I had to have a semen analysis and, at 48, it was right on the average and everything else was normal. She did get pregnant shortly after that, and we concluded it had just taken longer than average for her body to get back to normal.
Now it is generally accepted that volume does decrease with advancing age. Does that mean a threshold has been set, based on an average across a variety of ages, that means that many men who are simply young and ordinarily healthy may qualify?
It's funny how you can look back at things and interpret them more than one way. Someone posted much earlier in the thread saying what an ordeal hyperspermia was, because you had to cum more often than usual to keep from getting pain/aches. I get the impression that twice/day masturbation was probably a bit more than many of my peers were doing. But, for me, in the morning it wasn't that I couldn't start the day until I had rubbed one out; there were times when I did. But, on a normal day, I'd be horny then, I would know I would enjoy a good wank, and then I'd get a break from being horny and start the working day in a good mood so why not? But I also remember occasional afternoons when I'd have to sneak off to a cubicle to rub one out so I could then concentrate; possibly these were times when I had slept through the alarm so had to dash out and missed the morning session. None of this was an ordeal and I never thought of it as weird or unusual.
The other thing I will post in separate thread in case someone objects and it gets deleted.