Proper TestMix3 400 - Proper Labs

Proper TestMix3 400 for sale in the UK

Proper TestMix3 400 by Proper Labs is a high-strength testosterone blend delivering 400 mg/ml across three esters in a single ml. It's aimed at intermediate and advanced users who want the convenience of a multi-ester base without the five-compound complexity of a full Sustanon-style mix — buy testosterone blend UK with same-day dispatch and next-day tracked delivery from our Power Anabolics warehouse.

What is TestMix3?

TestMix3 is a streamlined three-ester testosterone formulation combining testosterone enanthate, testosterone cypionate and testosterone decanoate at a combined 400 mg/ml. Each ester releases the same parent hormone — testosterone — but at a different rate determined by the length of its carbon chain. The shorter and medium chains begin liberating testosterone within days, while the long decanoate ester sustains levels deep into the week. The dominant active half-life sits at 8–10 days, which means once- or twice-weekly intramuscular injections are typical for stable serum levels. Testosterone itself is the prototypal anabolic-androgenic steroid, used clinically as hormone replacement therapy and the foundation of virtually every off-label performance cycle.

Proper TestMix3 400 benefits

• Substantial increases in lean muscle mass and strength
• Improved nitrogen retention and protein synthesis
• Enhanced recovery between heavy training sessions
• Higher red-blood-cell count and aerobic capacity
• Lower injection volume vs 250 mg/ml blends — useful when stacking

The three-ester profile gives a faster on-ramp than pure long-ester testosterone with stable trough levels through the week, making it a flexible base for both bulking and recomp cycles.

Proper TestMix3 400 dosage and cycle

Beginners: not recommended — start with a single-ester testosterone such as Test E 300. Intermediate: 400 mg/wk (1 ml). Advanced: 600–800 mg/wk (1.5–2 ml). Cycle length is typically 10–14 weeks, with injections split twice weekly (e.g. Monday/Thursday) to keep blood levels even. Visible effects appear within 1–2 weeks for the shorter esters and stabilise by week 3–4 as the longer esters saturate. TestMix3 400 is not suitable for female users at any dose.

Side effects and PCT

As a fully aromatising testosterone blend, TestMix3 400 produces classic test-related side effects: water retention, oily skin and acne, accelerated male-pattern hair loss in genetically predisposed users, and elevated blood pressure. Oestrogen control is non-negotiable on cycle — typical practice is Arimidex (anastrozole) at 0.25–0.5 mg every other day, adjusted to bloods. Hepatotoxicity is not a concern as no testosterone ester is 17α-alkylated. Post-cycle therapy should begin roughly 18–21 days after the final injection (waiting out the decanoate clearance) and runs a standard SERM protocol of Nolvadex 40/40/20/20 mg/day or Clomid 50/50/25/25 mg/day for four weeks to restart the HPTA.

Stacks well with

TestMix3 400 is the testosterone base; most users add a second compound for the desired physique outcome. For lean mass and a harder look, pair it with Masteron Enanthate 200. For an aggressive bulking or recomp stack, run alongside Trenbolone Enanthate 200 with cabergoline on hand for prolactin control.

Frequently asked questions

How long does Proper TestMix3 400 take to start working?

Strength and pump improvements from the shorter enanthate and cypionate esters typically appear within 7–14 days. The decanoate ester saturates over weeks 3–4, by which point full anabolic effect is established. Most users report stable mood, libido and recovery gains by the end of week three.

Is Proper TestMix3 400 suitable for first-time users?

No. First-time testosterone cycles are best run with a single long-ester compound such as testosterone enanthate or cypionate, which simplifies dose titration and PCT timing. The 400 mg/ml strength of TestMix3 also makes lower entry doses awkward to draw — a 250 mg/ml product is more practical for beginners.

Can Proper TestMix3 400 be detected on a drug test?

Yes. Synthetic testosterone esters are detectable on WADA-grade GC-MS testing for up to three months after the final injection, driven by the slow-releasing decanoate component. The testosterone-to-epitestosterone ratio remains elevated well beyond the ester clearance window, so any sport governed by anti-doping rules will flag use.