Thread: Serum Testosterone While on Cycle

Testosterone is one of the most effective, safe and available steroids today, therefore I believe Testosterone is the best first cycle choice. The following text outlines the benefits and risks of Testosterone administration based on a clinical human trial of 61 healthy men in 2001. The purpose of the trial was to determine the dose dependency of testosterone’s effects on fat-free mass and muscle performance. In this trial 61 men, 18-35years old were randomized into 5 groups receiving weekly injections of 25, 50, 125, 300, 600 mg of Testosterone Enanthate for 20 weeks. They had previous weight-lifting experience and normal T levels. Their nutritional intake was standardized and they did not undertake any strength training during the trial. The only two groups that reported significant muscle building benefits were the 300 and 600 mg groups so any dose lower than 300mg will not be considered in this essay. 12 men participated in the 300 mg group and 13 men in the 600 mg group.

600mg of Testosterone a week for 20 weeks resulted in the following benefits. Increased fat free mass, muscle strength, muscle power, muscle volume, hemoglobin and IGF-1.

The same 600 mg administration resulted in 2 side effects. HDL cholesterol was negatively correlated and 2 men developed acne.

The normal range for total T in men is 241-827 ng/dl according to Labcorp and 260-1000 ng/dl according to Quest Laboratories. The normal range for IGF-1 is 81-225 according to Labcorp. Total T and IGF-1 levels were taken after 16 weeks and resulted in the following;

Total Testosterone
300 mg group-1,345 ng/dl a 691 ng increase from baseline
600 mg group-2,370 ng/dl a 1,737 ng increase from baseline
IGF-1
300 mg group-388 ng/dl a 74 ng increase from baseline
600 mg group-304 ng/dl a 77 ng increase from baseline

First Cycle and PCT

thanks Prince -- we'll chock that one up to proximity bias

Originally Posted by m11

With normal serum testosterone at approximately 250 -1,100 ng/dL and normal free testosterone at approximately 46-224 pg/mL, what would these values rise to when an individual is on cycle?

Surely the values will vary with different drugs and dosages -- I'm just looking for whatever data is available.

In this link are the effects of various doses of Testosterone.

Testosterone dose-response relationships in healthy young men -- Bhasin et al. 281 (6): E1172 -- AJP - Endocrinology and Metabolism

Thanks heavyiron, that's what I've been looking for.