What was the question?
This?
It does not do the double pass through your liver when administered via your skin.
Is that info correct?
I am not trying to be a prick, but that doesn't even make sense. "Do a double pass" does not mean anything. My hunch is that you are try to say that something administered transdermally, as opposed to orally, will skip the first pass of the liver. Yes, that is true.
And do you know why that is beneficial?
For some compounds, the first pass of the liver causes a major degredation of the compound, thus reducing oral efficacy/bioavailability. 1-test, 4-diol and other prohormones have low oral bioavailability because of the first pass of the liver.
Vitamin C, for example, has excellent oral bioavailability (i.e. it is not effected by the liver) and so, if you were to stick it in a transdermal gel, it would be a waste of time.
Is it starting to click?
Now, we mentioned 1-test above -- low oral bioavailability due to the first pass, so it makes sense to stick it in a gel, avoid the first pass and increase efficacy over oral administration.
Take 1-test and methylate it. Why would you do that? Adding the methyl increases oral bioavailability to damn near 100%. Why? Because it interferes with the liver's ability to break down the compound and render it useless. This is what causes increases liver enzyme levels, and (arguably) liver stress.
So by methylating it you (1) increase oral efficicacy, and (2) increase the chance of liver stress.
By then sticking it in a transdermal, you decrease (2) but simultaneously take away (1).
So my question to you is, why on earth would you bother?
Don't like the sides of M1T? Stick to a different compound, like a transdermal 1-test.
Prohormones and "prosteroids" are hormones and steroids, and they are serious compounds.
Use of them, without previous knowledge of all of the above, is in my opinion tantamount to "playing with hormones", hence my comment above.