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  1. Systemlord

    Kyzatrex - sudden emptiness feeling in head

    I have had the opposite experience. I recently restarted a Jatenzo, it was so consistent compared to injections. There was only a minor drop after each dose leading up to a steady state. I don’t agree with your comment that oral testosterone Isn’t right for most people. Most people haven’t been...
  2. Systemlord

    Switched from Testosterone troche to SQ shots, feel horrible now.

    I’ve been on injections and just about every protocol you can imagine and the worst protocol was sub Q. It sounds like your response is a little too robust. You might also be on too high a dosage. I would recommend lowering your dose to around 40 mg IM twice a week and don’t be afraid to lower...
  3. Systemlord

    Anxiety from Kyzatrex?

    My Endo just gave me the go-ahead to start Jatenzo at 396 mg twice a day. All smiles. My Endo couldn’t prescribe 494 mg twice a daily even if he wanted due to the guidelines from the manufacturer.
  4. Systemlord

    High HCT low iron

    My immune system is borderline overactive without vitamin C, I never get sick. I have high histamine levels. I sneezed a couple of times every night every day of my life.
  5. Systemlord

    Thyroid , would boosting T4 help anything

    When I checked all of my thyroid parameters, fT4 is always at the bottom of the range and fT3 near the top. This just shows I convert fT4 -> free T3 very efficiently. I even tried some fT4/fT3 and only bad things happen to me.
  6. Systemlord

    High HCT low iron

    Ferritin will more closely correlate with hematocrit and hemoglobin. I restarted Jatenzo five days ago. 10 months ago I had a hematocrit of 57% and my ferritin was 260. I was running normal testosterone values. I came off therapy to figure out my issues, I was overdosing on vitamin C, which is...
  7. Systemlord

    Anxiety from Kyzatrex?

    I restarted Jatenzo five days ago and the response has been remarkable. My muscles are getting really hard and I’m getting very strong. I’m going to talk to my endo about doubling up my dose. I would peak just over 2000 and would have a 1052 ng/dL midpoint level. I’ve been filling my...
  8. Systemlord

    Advice on next steps - mid-low free T

    I’m able to push way more reps. Once I accidentally double dosed and everything was too light that day and I was had to increase my weight 40%. I was able to work out seven days a week no problem at 53 years old.
  9. Systemlord

    Advice on next steps - mid-low free T

    TRT does allow me to push things significantly harder than I could do naturally at my age. TRT definitely helps.
  10. Systemlord

    Advice on next steps - mid-low free T

    Runner’s and endurance athletes have the lowest testosterone.
  11. Systemlord

    Sperm result after 3 months of HCG. What would you do?

    I took 20,000 IU per day for three months. I even made a thread about it. My vitamin D levels never went over 85. For some reason now that I got my diabetes mostly under control I can’t tolerate a level over 25 and even at this level feels like too much. I noticed I couldn’t tolerate potassium...
  12. Systemlord

    My Experience On Jatenzo (Oral TRT) Log

    I’m back on Jatenzo. The first dose kicked in after a couple hours. Insane energy and mental clarity. I’m going on and staying on for good. I noticed my motivation is higher! I don’t expect my hematocrit and hemoglobin to be elevated this time out because my ferritin is on the bottom end...
  13. Systemlord

    Adding Anastrozole, how much should I lower dose?

    Excessively elevated DHT will have an anti-estrogen effect and lower your estrogen. There’s no way to predict where the AI will put your estrogen because we don’t know how sensitive you are to AI’s. That would be like trying to predict your tolerance to alcohol and how many beers would it take...
  14. Systemlord

    Advice on next steps - mid-low free T

    I’ve been on both and my experience on oral testosterone is much better than any other formulation. Natesto benefits were very short-lived, a half an hour after each dose benefits waned. I stopped Jatenzo (competing brand to Kyzatrex) more than eight months ago and my HPTA fired back up after a...
  15. Systemlord

    New blood work, 8 months on TRT (Estrogen blocker/donate blood)

    I would just change your dose. You need to focus more on the hemoglobin than the hematocrit. Estrogen tends to run higher on TRT.
  16. Systemlord

    New blood work, 8 months on TRT (Estrogen blocker/donate blood)

    I would just lower your dose to 40 mg twice a week.
  17. Systemlord

    Male...gaining slight fat with cellulite in thighs all of a sudden even with normal lab results

    I’m really shocked by you guys, there’s no excuse, you’ve been members long enough to know better!
  18. Systemlord

    2.5 weeks in, is ai necessary?

    This is turning out to be a high dose for you. Your hormone levels are not reaching a steady state until 42 days. The nipple sensitivity is expected and common and not necessarily related to estrogen but testosterone as well. The nipple sensitivity is caused by hormonal fluctuations. Starting...
  19. Systemlord

    Testosterone anxiety?

    I think you should get your testosterone levels checked.
  20. Systemlord

    Male...gaining slight fat with cellulite in thighs all of a sudden even with normal lab results

    Almost no one gets enough vitamin D these days. Nothing helps you lose weight more than vitamin D. Vitamin D is also crucial for protein synthesis -> muscle building. Testosterone can’t build muscle without vitamin D. I noticed when I start taking more vitamin D my legs get harder and feel more...
  21. Systemlord

    90 mg of Vitamin C causing erectile dysfunction, low libido, 24/7 painful penis sensitivity

    Well, it’s official, I’m vitamin C deficient and never felt better! If I even consume 10 mg of vitamin C I develop extreme nausea, dizziness, and lightheadedness. This lasts for 3/4 of the day. There must be something genetic going on. It’s been 5 1/2 months since I’ve stopped the vitamin C...
  22. Systemlord

    Male...gaining slight fat with cellulite in thighs all of a sudden even with normal lab results

    Zinc is natural aromatase inhibitor and can decrease estrogen. I recall some members taking a lot of zinc and their estrogen was undetectable. DIM can shifts estrogen metabolism. You have the wrong ideas in your head about estrogen. By trying to balance estrogen better you have created an...
  23. Systemlord

    Male...gaining slight fat with cellulite in thighs all of a sudden even with normal lab results

    High estrogen would decrease fat storage, low estrogen would increase fat storage and redistribute it to the thighs, hips, and chest. Maybe some DHEA would increase your estrogen a bit. Are you taking any medications or supplements?
  24. Systemlord

    Looking for honest advice on hematocrit

    Donating blood only decreases hemoglobin and hematocrit for 2 to 3 weeks anyways and it’s right back to being elevated. There’s no mystery here. Get off this marry go round and change your dose.
  25. Systemlord

    Sperm result after 3 months of HCG. What would you do?

    This was never meant to be a therapeutic dose, it was meant to prevent Ricketts. This is where the 2000 IU vitamin D per day comes from. 10,000 IU per day is a therapeutic dose. You can absorb 60,000 IU in just a couple of hours in the sunlight. You may need some vitamin K.
  26. Systemlord

    Morning erection won’t go down without help

    Are we talking about priapism?
  27. Systemlord

    9 years on Gel - Switch to Injection - Effect on HCT?

    With your HCT at 43% I don’t think you’re going to have a problems with HCT even on IM injections. Your SHBG will go down though. You could always go oral testosterone route, Jatenzo or Kyzatrex.
  28. Systemlord

    Sperm result after 3 months of HCG. What would you do?

    Yes, vitamin D has a big impact on sperm parameters. Vitamin D deficient men have significantly lower total mobility, sperm quality, motility and progressive sperm motility. Vitamin D deficiency is associated with male infertility.
  29. Systemlord

    Help with blood test results and erectile dysfunction

    Nope, high estrogen doesn’t lead to gyno, an imbalance of testosterone, estrogen, DHT and prolactin triggers gyno. Gyno is more common in men with low testosterone, not high testosterone. Study show that some men on TRT with estrogen below 42.5 have lower libido and ED because their...
  30. Systemlord

    Help with blood test results and erectile dysfunction

    It’s normal for estrogen to be higher on injections. Why is high estrogen a problem?
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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