free test

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What would you do? HCT vs. BP

After years of playing around with different test cyp doses and such, daily seems to be the best for me. But, I’m at a crossroads. Would you rather have…using Quest’s best labs… HCT 54% Free Testosterone 150 pg/mL Ultrasensitive E2 30 pg/mL Blood Pressure 125/80 Or… HCT 50% Free Testosterone...
- GreenMachineX
- Thread
- Apr 18, 2025
- e2 free test hgb/hct
- Replies: 27
- Forum: Testosterone Side Effect Management
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Normal Total T, Normal SHBG and Estradiol.. but low Free T??? why?

Got my bloodwork back. Im not on TRT. for some reason everything looks fine besides my free T. any idea why that might be?
- Arcane
- Thread
- Nov 25, 2023
- blood analysis free test low free test total testosterone
- Replies: 4
- Forum: Testosterone Basics & Questions
T
Free testosterone question?

So I’ve finally found a good protocol for me that works. I take 60 mg injection once a week and it’s been working great for me. I take in a Monday morning and just had blood checked on a Thursday night and it’s still 545 and my estrogen is well within range.The only thing is my free is 8.9 which...
- Tlow
- Thread
- Jun 24, 2022
- free test
- Replies: 5
- Forum: Testosterone Basics & Questions
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Natural Testosterone diurnal patterns? trying to dial in TRT and dose timing, etc.

Has there ever been studies done on natural diurnal patterns of healthy males... such as blood taken ever hour or 2 hours throughout a 12-24 period to see how steady Total and Free Test levels are? From my limited research the consensus is that Testosterone is the highest in the AM and falls...
- BillyJ03z
- Thread
- May 21, 2019
- diurnal free test normal testosterone levels patterns testosterone total test
- Replies: 23
- Forum: Testosterone Basics & Questions

TRT Hormone Predictor Widget

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