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The Testimator

The Testimator helps you to dial-in your desired testosterone levels by interpreting your individual dose response to testosterone, calculated from a single baseline blood test.

Protocol Comparison

Baseline Protocol

Σ Per Week
mg
Frequency

Baseline Level

Peak
ng/dL
Trough
ng/dL
Peak-to-trough swing: 53%

Target Protocol

Σ Per Week
mg
Frequency

Target Level

Edit peak or trough to solve for the required dose.

Peak
ng/dL
Trough
ng/dL
Peak-to-trough swing: 36%

14-Day Testosterone Level Simulation

Baseline
Target
Optimal trough zone
Injection

How to Use the Testimator

Enter your current Baseline Protocol (weekly dose, frequency, peak and trough from a blood test) on the left. On the right, model a new Target Protocol.

Forward mode: edit the target weekly dose or frequency to see predicted peak and trough levels.

Reverse mode: edit the target peak or target trough directly to solve for the weekly dose required to reach those levels. Useful for asking "what dose do I need to hit a trough of 18 nmol/L?"

The shaded green band on the chart is the Australian endocrinology on-treatment target trough range (≈15–25 nmol/L total testosterone). The peak-to-trough swing percentage below each trough is a useful proxy for how stable your levels are between injections.