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    How much slower is subQ compared to IM?

    How much slower is the release and taper of a subcutaneous injection compared to an intramuscular injection?
  2. B

    Microdosing injectable testosterone for primary hypogonadism

    Too bad the forum is down. Do you remember the outcome?
  3. B

    Microdosing injectable testosterone for primary hypogonadism

    If the HPTA only produce LH after it detects testosterone levels that’s way below the saturation point, supplementing with steady levels of exogenous T will shut you down. But if the HPTA produce LH based on testosterone levels that’s just below the saturation point, then it make sense that you...
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    Microdosing injectable testosterone for primary hypogonadism

    I’ve read the Natesto thread and how it’s possible to preserve endogenous testosterone while supplementing with exogenous. Natesto do this by giving peak levels three times a day, and in between those exogenous peaks testosterone return to endogenous baseline and the HPTA can get to work again...
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    3 week cycle on Testosterone Cypionate

    Is hemoglobin/hematrocit a big concern with short cycles like this? Why is a 3 week cycle pointless if you’ll gain more on cycle than off, and if you’ll recover fast? I ended a 16-week 250mg/ew test C cycle in december and doing PCT now. I haven’t started this new cycle yet, but got interested...
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    3 week cycle on Testosterone Cypionate

    Does 1000mg test C have the same half-life as 250mg test C? Or does the amount injected change the half-life? If not, why can’t we just use Test C instead of Propionate for short cycles? If I want to do a 3 week cycle, I can front-load 1000mg test C the first day then nothing more, and have...
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    Could there be any way to eke some usefulness out of remaining cypionate without shutting down?

    Esterified testosterone (atleast propionate) absorb through skin when dissolved in an ethanol/water solution, and was rapidly converted to testosterone base according to this study done on rats Skin Permeation of Testosterone and its Ester Derivatives in Rats I think it will have higher...
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    Unorthodox "cycle" idea

    Did you try this and did bloodwork? Tren is way more suppressive than Testo. I think 100mg Testo P every week is a better approach.
TRT Hormone Predictor Widget

TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

Predicted Hormone Levels

Enter your total testosterone value to see predictions

Results will appear here after calculation

Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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