When to take blood sample

Chrander

Member
Hi.

I am used to taking blood sample in the morning (before starting trt 16 weeks ago). Now I want to know how my hormone levels develop from week to week (Nebido) in order to manage the correct interval of injection. Due to my work, I am no longer able to test during the morning, but more so around noon. I know morning cortisol etc. is out of the picture, but I imagine it doesnt mather when I am on trt, correct?

One concern from last week, thil this week is that I started taking 20mg tamoxifen for gyno, and it may affect estradiol and test-values. My goal of testing is to see how rapid/slow my test values drop. Now I am on a emotional rollercoaster and want to dial in my protocol as fast as possible. I am wiggling back and fourth regarding implementing Arimidex 0.25 per week, but I really want to not use anything else than Nebido. Only using Tamoxifen for gyno. I know the testosterone needs to stabilize and less is more.

Best regards.
 

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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