1-test has not been classified as an AAS; therefore,
sale of 1-test is not regulated.
Pure 1-test is extremely irritating. It can be applied transdermally at the cost of (in some) mild skin irritation. It cannot be injected intramuscularly.
Methylated 1-test can be absorbed gastrointestinally, but the rate of conversion is limited by available liver enzymes. Higher doses may not have added effect, once the enzyme limit is reached. And de-methylation is a major cause of hepatotoxicity.
You will find esterified and/or etherified 1-test also sold in bulk. If I recall (don't believe without checking further), the ether can be taken orally with minimal hepatotoxicity (but liver limited conversion to active form) and the ester can be injected if you like to take chances with sterility (the solution, not yours).
I can only report some experience transdermally. The worst problem is the flavor/odor of the penetrating agents. The gel will start hair growing anywhere on your body that you apply it (except the scalp!). In my case, it also caused my hair to start falling out at relatively average dose levels.
In my estimate, a usable transdermal dosage of 1-test (2x a day) is comparable (maybe) to IM enanthate at 200mg/wk. That's pretty spectacular, though hardly as earth-shaking as the 1-test promoters say. The 1:7 ratio often quoted is bullshit, being based on a rat test of questionable applicability to humans.
1-test has been around a real long time (since the '30s) and has only been exploited commercially recently. Imho, it has strong DHT-like side effects, and good anabolic effects. It may also inhibit the HPTA, so it should be cycled. It is not considered an alternative to real
Testosterone for HRT.