Zarati,
This might help with your concern and understanding what's going on here.
DHT is derived from testosterone, either produced by your body or injected. DHT is a specific compound and won't be created from anything else, such as DHB, anavar, winnie, etc.
So, DHT levels (actual levels - more on this below) will be a function of conversion from testosterone to DHT (via 5 alpha reductase, an enzyme that
reduces / adds a hydrogen to the 5th carbon of the testosterone molecule).
If you're using AAS and not replacing testosterone (injecting it), then those AAS will inhibit your body's own (endogenous) testosterone levels and thereby reduce testosterone which will mean less substrate from which to produce DHT, and less DHT in all likelihood. (The same will hold for estrogen / estrodiol - see below.)
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Here's where things get a bit mixed up:
The androgenic action DHT on hair (loss) can come from other androgens, especially those that are also "DHT derivatives" or more specifically also share the chemical modification (5th carbon atom - see above) that makes DHT the (androgenic) culprit that causes hair loss versus testosterone (more anabolic) that's less problematic there. (This is just a general rule of thumb but should help you make sense of the info. you've collected.)
For instance, anavar, anadrol, proviron, and winstrol are all 5 alpha reduced...
So, these and other steroids *may* or may not cause hair loss (this is a function of genetics, of course, and some of this could be in your head, pardon the pun) because of this chemical modification, but they will
not actually elevate DHT b/c they won't be converted into it and will more likely (in lieu of no incoming / injected testosterone) result in less actual DHT in the blood. (In short: Steroid use w/o testosterone use --> Shuts down body's testosterone --> Less Test from which to make DHT --> Less DHT.)
HOWEVER - when / if you do a
blood test for DHT - just a routine one that you'd get at Quest or Labcorp for instance - it won't be very specific (accurate) for measuring DHT per se and, if you've got elevated blood levels of other androgens (such as those above), this can produce a false ("false positive") result suggesting your DHT is elevated when it's just the gear that's being measured. Even different clinical blood tests for DHT (when there's no gear involved) can give widely disparate results:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2588550/
Also, less testosterone (per the above) and no use of aromatizing AAS --> less estrogen and less estrogen receptor binding steroids / estrogenic metabolites --> Blood tests (accurately) suggest less estrogen. In this can, the androgenic AAS is reducing both DHT and estrogen, but giving a false positive for DHT (my best guess).
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So, if your concern is hair, I'd go by what most guys who experience hair loss experience with different compounds. The DHT blood test (per the above) can confirm to some degree what you might expect, but I wouldn't expect that could / would entirely predict what compounds cause hair loss for you.
-S