@gondar1 I had to digest what you said here and it really made me think because I had never considered this. Even my men's clinic doc wanted AM blood draws. So the more important thing to consider then is where in the trough you're getting it done?
I can't quote a nice simple scientific resource that definitively proves or disproves this but I would welcome it either way if anyone can post one or anything that furthers the discussion.
Being keenly aware that the complexities of the HPTA are wildly beyond the simple terms that us meatheads discuss them in, here's what makes sense to me - I am wiling to go with the thought that in a
healthy male with a balanced endocrine system the large pulse of T that comes around the time of awakening would provide the most predictable set of circumstances to give consistency to the a BW result. Also it makes some sense to test at what is expected to be the peak of the hormone to see what the potential output is and also to possibly disqualify you as a candidate for any unnecessary treatment.
But (if we accept the following statements to be true).....
If you are on TRT or a cycle you do not fit the "healthy and balanced" definition.
Exogenous T is seen by the various feedback loops as the real thing.
When the feedback loops and metering systems inside us sense that the level of T is sufficient, production of T is shut down as in - "That was a pretty heavy cycle, shut me down real hard, PCT may be rough bro"
So if you have more T floating around your system than your monitoring systems expect is needed there is no "large" morning pulse, if their is a pulse at all.
No pulses means that the advantage (if their really was one) of measuring at that time are gone.
Being that we know the blood levels fluctuate we need to take timing into consideration if we wish to achieve any consistency at all - if Jonny Rockhard takes his TRT 200mg once every two weeks (yuck btw) on Monday mornings the difference between a Tuesday morning draw (very high levels- 1day post shot) and a pre dose Monday morning draw (very low levels-14 days post shot) the differences would be very high and almost impossible to learn anything from.
Also -Here's a quote from a different conversation I'm having, the question was 'Quick question Gondar.... why would you want to pull bloods right at the trough prior to next pin as opposed to when the test is most active? '
A: "Most important reason to me is consistency, doing this over a course of some years and sticking to it provides much more reliable data than at "random" times. At the trough has been requested by every Dr I have seen that specified. It seems to be the industry standard and pretty much a standard in the bbing world as well, at least for those who have an understanding of the importance of timing and how much difference it makes in results.
I've had it explained to me by people who understand math much better than me - If you measure while at the brief peak, the variance over any period of time difference (+ or - minutes or hours) is kind of screwed up.
IOW results are more reliable (the graph is more flat) the further away from the peak you get.
Hope that makes sense, Just getting that consistency is enough for me and seeing as the Dr's ask for that if I stick to it then any data I have is more meaningful"