ADELPHI RESEARCH TEST PROP 100

Adelphi Research Testosterone Propionate 100mg/ml is the fast-acting testosterone ester preferred for cutting cycles, competition prep, and short cycles where rapid onset and quick system clearance are priorities. With a half-life of just 0.8-1.5 days, Test Prop delivers noticeable effects within 1-2 weeks and clears the body within 3-4 days after the last injection, allowing PCT to begin just 3 days later.

Why Test Prop for Cutting

The short ester produces less oestrogen fluctuation than Testosterone Enanthate, resulting in less water retention and a drier, more defined appearance. It is the standard testosterone base for cutting stacks alongside Winstrol, Masteron, and Anavar. The Rip Blend (Test Prop + Tren Ace + Mast Prop) is the pre-mixed version of the classic cutting stack built around Propionate.

Suggested Protocol

• Dose: 100mg every other day (350mg/week) for 8-10 weeks
• PCT start: 3 days after last injection
• PCT: Nolvadex 40/40/20/20mg for 4 weeks

Key Facts

• Active ingredient: Testosterone Propionate 100mg/ml
• Manufacturer: Adelphi Research
• Half-life: 0.8-1.5 days
• Injection frequency: every other day minimum
• Aromatisation: yes (lower fluctuation than long esters)

Compare esters in our Test E Guide. Browse all Adelphi Research products.