Tri-Ester Test 400 by Pharmaqo Labs is an injectable blend of testosterone built from three long-acting esters (enanthate, cypionate and decanoate), dosed at 400mg per millilitre. It is an oil-based intramuscular injectable used as a testosterone base for bulking cycles.

Test 400 contain:

Testosterone Cypionate 100 mg/ml,
Testosteorne Enanthate 100 mg/ml,
Testosterone Decanoate 200 mg/ml

What Tri-Ester Test 400 is used for

• A staple testosterone base for adding size and strength during a bulking phase.
• Three long esters give a steady release, so blood levels stay stable without daily injections.
• Supports higher training volume through improved recovery, nitrogen retention and protein synthesis.
• Commonly run as the foundation of a stack alongside other injectables or orals.

How it is run

The figures below are commonly reported by users. They are a guide, not medical advice.

• Typical male range: 400 to 800mg per week. A first cycle usually sits at the lower end.
• All three esters are long, so twice-weekly injections (for example Monday and Thursday) keep levels even. There is no need for daily shots.
• Cycle length is usually 8 to 12 weeks.
• Not advised for women due to strong virilising effects.

Tri-Ester Test 400 is a blend of three long-acting testosterone esters (enanthate, cypionate, decanoate) in a single oil at 400 mg/ml. It provides a sustained release of testosterone over one to two weeks, making it a convenient base for bulking cycles or testosterone support. Users typically choose it for steady androgen levels without daily injections.

Side effects and support

Testosterone converts to oestrogen, so water retention and gynaecomastia are possible. An aromatase inhibitor such as anastrozole is commonly used to keep oestrogen in check. Other reported effects include acne, oily skin, raised blood pressure and hair loss in those genetically predisposed. Testosterone also suppresses your own production, so a full Post Cycle Therapy is needed once the esters clear. Because the decanoate ester is long, PCT is usually started around two to three weeks after the final injection. HCG is often used during the cycle to help maintain testicular function. Regular bloodwork and a check with a doctor before and during use are strongly advised.