TEST 400mg/mL – Grape Seed Oil – 10mL Vial

Testosterone 400mg/mL is a high concentration injectable testosterone formulation delivering 400mg of testosterone per milliliter in a 10mL multi dose vial using grapeseed oil as the carrier base. At 400mg/mL this represents one of the highest concentration testosterone formulations in CSD’s injectable range, and grapeseed oil’s relatively low viscosity compared to heavier traditional carriers like cottonseed and sesame oil makes it a practical carrier choice at this concentration level providing manageable draw and administration characteristics despite the high compound load per milliliter.

The defining characteristic of this formulation is its concentration. At 400mg/mL researchers can achieve equivalent compound delivery in a significantly reduced injection volume compared to standard 200mg/mL and 250mg/mL testosterone formulations. A meaningful practical consideration in protocols requiring higher dose administration where minimizing injection volume per dose is a priority variable. Grapeseed oil’s clean tolerability profile and light viscosity further support this by ensuring the high concentration formulation handles smoothly across repeated administrations over extended protocol periods.

Compared to CSD’s Testosterone 400mg/mL MCT oil variant, this grapeseed oil formulation delivers an identical compound and concentration through a natural oil carrier rather than a synthetic solvent base. Researchers with a preference for natural oil carriers or a sensitivity history with synthetic carriers like Ethyl Oleate or MCT oil will find grapeseed oil a well tolerated alternative at this concentration level, the pharmacokinetic profile remaining consistent regardless of carrier selection.

Every batch of CSD’s Testosterone 400mg/mL grapeseed oil formulation is third party lab tested for concentration accuracy and purity prior to release, with COA documentation available on request. Canada Steroid Depot has supplied Canadian customers with consistently verified, accurately dosed compounds for years, and our high concentration testosterone range represents some of the most specialized formulations available from a verified Canadian supplier. All orders ship discreetly across Canada in plain, unmarked packaging with no identifying information on the exterior.

Store at room temperature away from direct light and heat. 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.