Free testosterone conversion

maran77

New Member
Hey guys I guess my doctor measured my free testosterone instead of total testosterone in latest bloodwork ..how did I do the conversion if there is one if my free testosterone is 340 pmol/L
 
Hey guys I guess my doctor measured my free testosterone instead of total testosterone in latest bloodwork ..how did I do the conversion if there is one if my free testosterone is 340 pmol/L
Free testosterone percent is different for everyone. This might give you a rough estimate?

 
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Hey guys I guess my doctor measured my free testosterone instead of total testosterone in latest bloodwork ..how did I do the conversion if there is one if my free testosterone is 340 pmol/L



You only posted your TT levels in the previous thread and this was 8 days after your first injection.

Where is the screenshot of your FT levels with the reference range and why would your doctor tell you to have your bloodwork done so soon as you just started trt?

Forget worrying about where your TT let alone FT levels sit as you just started trt and had your first injection on Nov.4th.

You would need to wait 4-6 weeks for blood levels to stabilize before getting blood work done due to the half-life of the ester (TC/TE).

Most men on trt are injecting 100-200 mg/week whether once weekly, twice weekly, M/W/F, EOD, or daily.

Even then most can easily hit a high let alone very high FT level on 100-150mg/week.

Far from common that anyone would need the higher-end dose of 200 mg T/week.

Are there outliers?

Sure but far and few.

Unfortunately, you were started on a piss poor protocol (high-dose T) injected every 2 weeks let alone your uneducated doctor sent you for blood work 8 days (Nov. 12th) after your first injection!

The piss poor protocol would have your TT/FT levels absurdly high post-injection/during the first few days then slowly declining throughout the week only to have you back to hypogonadal well before your next injection.

A rollercoaster ride for anyone.

This will have a negative impact on energy, mood, libido, erectile function, and recovery let alone have you feeling like S**T well before you hit your true trough (14 days post-injection).

If anything you would be far better of injecting 100 mg T/week split (50 mg every 3.5 days).

If you are uncomfortable injecting more frequently then you can stick with once-weekly injections for now.

Although some men may do well on a once-weekly protocol the downfall is that there will be a big difference in your peak--->trough.

TT/FT levels will be very high post-injection/during the first few days only to be followed by much lower levels come week's end (depending on the dose used).

As stated earlier this can have a negative impact on mood, energy, libido, erectile function, and recovery.

Injecting more frequently has the advantage of clipping the peak--->trough and will result in more stable blood levels throughout the week.

Always best to start low and slow on a T-only protocol.
 

hCG Mixing Calculator

HCG Mixing Protocol Calculator

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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