Lowering T doasge- when to do blood test?

lexer

New Member
Im lowering my T dose from 45mgs every tues and friday to 30 mgs every tues and friday.
i just made the switch yesterday. How long should i wait until i get my T levels tested again? 2 weeks?
 
Serum levels will be in transition for six weeks, as madman and Vince pointed out. Any change resets the clock and you're back to a six week shakedown cruise.
 
Last edited:
Serum levels will be in transition for six weeks, as madman and Vince pointed out. Any change resets the clock and your back to a six week shakedown cruise.

What if you switch to an EOD protocol on the same dosage, won't your levels reach a steady state sooner? This time my shakedown cruise is a bit milder and am assuming it's because my levels were already pretty stable on Twice weekly.
 
What if you switch to an EOD protocol on the same dosage, won't your levels reach a steady state sooner? This time my shakedown cruise is a bit milder and am assuming it's because my levels were already pretty stable on Twice weekly.
I know when I went from twice weekly to a daily injection schedule, same dose, it was an interesting ride. My doctor and Dr. Saya both pointed out that everything is in transition, not simply the total testosterone marker, and the half-life/frequency changes are not necessarily impacting things in unison. Bottom line - draw no conclusions until that six week mark.
 

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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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