Testosterone Measurement While Treating Prostate Cancer: Which Test and When?

Nelson Vergel

Founder, ExcelMale.com
The Canadian consensus statement recommends achieving a serum testosterone level of less than 0.7nmol/l as there appears to be an associated clinical benefit9. Additional recommendations include regular monitoring of testosterone and PSA levels throughout the first year of ADT treatment, using validated LC-MS/MS methods for testosterone assays at low testosterone levels (<0.7 nmol/l) (0r 20 ng/dL)

In conclusion, lower testosterone levels correlate with better freedom from CRPC. Breakthrough testosterone levels above 1.7 nmol/l have higher rates of failure. Testosterone levels should be assessed periodically to ensure castrate levels (every 3- months), with confirmation of lab assays at low testosterone levels. Lastly, the role of testosterone and other serum androgens as prognostic and predictive biomarkers in mCRPC requires more study.
APCCC 2019: Testosterone Measurement - Which Test and When?
 
The Canadian consensus statement recommends achieving a serum testosterone level of less than 0.7nmol/l as there appears to be an associated clinical benefit9. Additional recommendations include regular monitoring of testosterone and PSA levels throughout the first year of ADT treatment, using validated LC-MS/MS methods for testosterone assays at low testosterone levels (<0.7 nmol/l) (0r 20 ng/dL)

In conclusion, lower testosterone levels correlate with better freedom from CRPC. Breakthrough testosterone levels above 1.7 nmol/l have higher rates of failure. Testosterone levels should be assessed periodically to ensure castrate levels (every 3- months), with confirmation of lab assays at low testosterone levels. Lastly, the role of testosterone and other serum androgens as prognostic and predictive biomarkers in mCRPC requires more study.
APCCC 2019: Testosterone Measurement - Which Test and When?

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Is It Time for New Strategies to Treat Aggressive Prostate Cancer?
 

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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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