I looked at the Secondary Outcome Measures of the "Effect of testosterone supplementation with and without a dual 5α-reductase inhibitor on fat-free mass in men with suppressed testosterone production: a randomized controlled trial" study to analyze changes in Hematocrit.
Note that this is for males Under 50.
The highest % change of Hematocrit they found was 5.3 after 20 weeks.
I hope this is useful for those who are on TRT or whose cycles tend to be longer.
Look at Table e2 and e3. Here is a copy of the PDF:
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