Test S100 (Test Suspension) – 100mg/mL – 10mL Vial

Testosterone Suspension is the only testosterone formulation with no ester attached; it is pure, unmodified testosterone suspended in an aqueous base rather than an oil carrier. This fundamental difference in chemistry produces a uniquely rapid pharmacokinetic profile that sets it apart from every other injectable testosterone in CSD’s range. With a half life measured in hours rather than days, Testosterone Suspension reaches peak blood concentration faster than any esterified testosterone compound, making it one of the most studied fast onset testosterone formulations in pharmaceutical and endocrine research.

The absence of an ester chain means the entire molecular weight of the compound is active testosterone, unlike esterified formulations where a portion of the molecular weight is occupied by the ester itself. This gives Testosterone Suspension a higher ratio of active testosterone per milligram compared to enanthate, cypionate, decanoate, or any other esterified variant at equivalent concentrations. At 100mg/mL, researchers are working with a greater amount of bioavailable testosterone per dose than a 100mg/mL esterified formulation would deliver.

The aqueous suspension format requires particular attention to handling compared to oil based injectables. Testosterone Suspension particles can settle over time and the vial should be thoroughly agitated before each use to ensure uniform concentration throughout the solution. More frequent administration is required to maintain stable blood concentration levels given the short half life; typically daily or every other day in documented research protocols,  a meaningful logistical consideration compared to the weekly or twice weekly schedules associated with long acting esterified formulations.

Every batch of CSD’s Testosterone Suspension is third party lab tested for concentration accuracy and purity, with COA results included with the product and full documentation available on request. Canada Steroid Depot has supplied Canadian customers with consistently verified, accurately dosed compounds for years, and Testosterone Suspension represents one of the most specialized formulations in our injectable testosterone range. All orders ship discreetly across Canada in plain, unmarked packaging with no identifying information on the exterior.

Shake well before use. Store at room temperature away from direct light. Do not freeze. Intended for research purposes only.

Commonly researched alongside an aromatase inhibitor. Browse CSD’s full injectable testosterone range and PCT compounds for complete protocol sourcing.