How Long Does It Take to Start Working?

Test 350 combines the fast-acting effects of testosterone propionate with the sustained release of testosterone enanthate. Propionate starts boosting serum testosterone levels within hours, while enanthate maintains these levels for 3 to 5 days. Noticeable effects on muscle growth and fat reduction can begin within 4 to 6 weeks, with significant results typically seen in 8 to 12 weeks.

How Long Does It Last?

With a mix of esters, Test 350 provides both immediate and prolonged effects. The propionate component has a half-life of 1 to 2 days, requiring more frequent injections, while the enanthate component has a half-life of 7 to 9 days, offering longer-lasting benefits. This combination means the effects of Test 350 can last for up to a week or more, depending on dosing frequency.

How Long Does It Stay in the System?

Testosterone propionate clears the system within a few days due to its short half-life of 1 to 2 days, while testosterone enanthate takes longer, with its concentration halving every 7 to 9 days. For example, a 30 mg dose of enanthate would reduce to 15 mg in a week, then 7.5 mg after another week, while propionate would diminish much faster.