Testosterone Cypionate 250mg/ml

A high-purity, oil-based injectable formulation of Testosterone Cypionate (17β-hydroxyandrost-4-en-3-one cypionate) designed exclusively for laboratory, analytical, and research applications. The long-chain cypionate ester ensures a slow, sustained release of testosterone, making it ideal for androgen receptor, endocrine, and metabolic studies requiring steady plasma-like concentrations over time.

This extended-duration profile allows researchers to examine the anabolic-androgenic effects of testosterone with minimal administration frequency.

Endogenous androgen model compound:
Testosterone Cypionate serves as the benchmark androgen in comparative studies exploring receptor binding, anabolic activity, and feedback regulation.

Stable pharmacokinetic profile:
The cypionate ester provides a long half-life (~7–8 days in vivo models), supporting extended-duration endocrine and metabolic research protocols.

Comprehensive physiological relevance:
Supports studies involving muscle protein synthesis, erythropoiesis, bone density modulation, and secondary sexual characteristic expression.

Reference standard for anabolic ratio testing:
Used as a control compound for assessing the anabolic-to-androgenic ratio of experimental androgens and SARMs.

Ideal for endocrine recovery and suppression models:
Frequently utilized to study hypothalamic–pituitary–gonadal (HPG) axis feedback and testosterone replacement dynamics in mammalian systems.

Our Testosterone Cypionate 250 mg/mL delivers pharmaceutical-grade testosterone in a long-ester formulation engineered for research reproducibility and analytical confidence.

• ≥99% purity confirmed via HPLC & Mass Spectrometry

• Long-ester profile with ~7–8 day half-life for steady kinetics

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

• Full COA (Certificate of Analysis) available upon request

• Discreet, tracked shipping for laboratory assurance

Once administered, Testosterone Cypionate undergoes enzymatic hydrolysis to release free testosterone, which binds to androgen receptors in target tissues. This receptor-mediated mechanism influences gene transcription associated with muscle hypertrophy, nitrogen retention, and erythropoietin synthesis.

Research domains commonly include:

• Androgen receptor binding and transcriptional activity assays

• Comparative anabolic / androgenic studies

• Endocrine regulation and feedback inhibition models

• Skeletal muscle growth and nitrogen balance experiments

• Bone mineral density and erythropoiesis research

Is Testosterone Cypionate legal to purchase?
A: Our Testosterone Cypionate is sold strictly as a research chemical and not for human consumption. Purchasers are responsible for ensuring compliance with jurisdictional laws.

What is the half-life of Testosterone Cypionate?
A: The cypionate ester confers a half-life of approximately 7–8 days, supporting extended kinetic observation windows in in-vivo protocols.

How does it compare to Testosterone Enanthate?
A: Both are long-acting esters; Cypionate has a slightly longer carbon chain, resulting in a marginally slower release and smoother plasma concentration curve in comparative pharmacokinetic models.

What types of physiological responses are observed in studies?
A: Research data show increases in protein synthesis, red-blood-cell production, and nitrogen retention, along with androgen-responsive changes in bone and reproductive tissues.

Can it be co-administered with other compounds?
A: In androgen research, Testosterone Cypionate often serves as a base compound for comparison with synthetic anabolic agents, SARMs, or secondary hormone analogs.

What about possible side effects in human data?
A: Human literature notes potential suppression of natural testosterone, lipid alterations, and androgenic side effects (e.g., acne, hair loss) at supraphysiological exposures—important reference data for toxicity and feedback modeling.

What if crystallization occurs in the vial?
A: Warm gently (≤37 °C) and swirl until fully dissolved. If discoloration or particulate matter remains, do not use.

Please check your email after purchase for detailed research handling guides, dilution protocols, and peer-referenced pharmacology data on testosterone esters and androgen receptor studies.