Sustanon 350mg/ml

A high-purity, oil-based injectable formulation of Sustanon 350 mg/mL, composed of a precisely balanced blend of four testosterone esters designed solely for laboratory, analytical, and research use.
Each milliliter delivers a total of 350 mg of testosterone in sustained-release form, allowing researchers to examine both rapid and prolonged androgenic and anabolic responses in endocrine, muscle, and metabolic studies.

The multi-ester profile provides a staggered release curve, making it ideal for comparative pharmacokinetic modeling and androgen receptor activation research requiring both immediate and long-term activity.

Multi-phase release kinetics:
Contains short, medium, and long-chain esters (Propionate, Phenylpropionate, Isocaproate, and Decanoate) to replicate both acute and extended testosterone release phases.

Comprehensive androgenic modeling:
Used in research examining total androgen load, feedback inhibition, and dose-response kinetics across multiple timeframes.

Enhanced anabolic consistency:
Stable serum testosterone levels make Sustanon valuable in long-term anabolic vs androgenic comparison models.

Reduced injection frequency:
The inclusion of long esters such as Isocaproate and Decanoate extends activity, reducing required administration frequency in in-vivo protocols.

Validated purity and composition:
Each batch undergoes chromatographic verification to ensure precise ester ratios and ≥99 % purity of active compounds.

Our Sustanon 350 mg/mL delivers a pharmaceutical-grade, multi-ester testosterone formulation developed for controlled research environments exploring hormone kinetics, receptor binding, and muscle-bone interaction pathways.

• ≥99 % purity confirmed via HPLC & Mass Spectrometry

• Balanced four-ester profile for fast and sustained action

• Sterile, oil-based injectable in tamper-evident vials

• Full COA (Certificate of Analysis) available on request

• Discreet, tracked shipping for laboratory assurance

Sustanon combines four testosterone esters with distinct release profiles:

• Testosterone Propionate (30 mg): rapid onset within hours

• Testosterone Phenylpropionate (60 mg): medium-acting

• Testosterone Isocaproate (100 mg): mid-to-long duration

• Testosterone Decanoate (160 mg): long-acting base ester

Upon hydrolysis, each ester releases bio-identical testosterone, binding to androgen receptors in muscle, bone, and neural tissues. The gradual release maintains stable serum concentrations, useful for endocrine rhythm modeling and androgen receptor occupancy studies.

Research domains include:

• Androgen receptor binding and modulation assays

• Anabolic vs androgenic comparison studies

• Feedback suppression and HPTA recovery research

• Muscle hypertrophy and nitrogen-balance models

• Bone density and erythropoiesis stimulation studies

Is Sustanon legal to purchase?
A: Primal Pulse Sustanon 350 is sold strictly as a research chemical, not for human consumption. Buyers are responsible for compliance with applicable laws.

What is the half-life of Sustanon?
A: Due to its multi-ester composition, Sustanon exhibits a biphasic half-life, with an early release from Propionate/Phenylpropionate (1–3 days) and sustained release from Isocaproate/Decanoate (up to 10–14 days).

How is it different from single-ester testosterone products?
A: Sustanon combines both short and long esters for rapid onset and prolonged duration, making it valuable in comparative research of pharmacokinetics, serum stability, and receptor response across time windows.

What effects are typically observed in research?
A: Published data show increased nitrogen retention, enhanced protein synthesis, and elevated red-blood-cell production, making it useful for anabolic and hematopoietic investigations.

Can it be combined with other compounds in research?
A: Sustanon is frequently paired with Nandrolone Decanoate or Boldenone Undecylenate in co-administration studies examining anabolic synergy and androgen receptor interactions.

What if crystallization occurs?
A: Warm gently (≤ 37 °C) and swirl until clear. Do not use if dark discoloration or particulate matter persists.

What are known risks in human data?
A: Human studies show possible suppression of endogenous testosterone, lipid alterations, and androgenic side effects at higher exposures. Such effects are referenced for research awareness only.

Please check your email after purchase for detailed guides on testosterone ester kinetics, reconstitution protocols, and reference studies supporting androgenic and anabolic research.