Jet Black Stools - Is This A TRT Side Effect?

Here's a letter from my Endo doctor. Haven't heard 1 peep out of him in 45 days. Unreal

Hello,
I received your results of cosyntropin stimulation test. It is normal.
Your testosterone level has been in high range several times in past which is causing secondary polycythemia (increased red blood cells) and predisposes you to enlarged prostate (BPH) in future.
I would suggest holding testosterone and reassessing lab- Total Testosterone in 3 months.
If your repeat total testosterone level is low, we could consider further testing including pituitary MRI.
I see you are already working with your primary regarding evaluation of underlying cause for your other symptoms.
Thank you.



Did he really just tell me to stop taking testosterone cold turkey? I had to read this 5 times because I couldn't believe it. What kind of Endo does this to someone?
 
Yep, he told you to stop... what a jackass. Well, I think that lowering little by little wouldve been better for you. But I also think that if you have a hematocrit of 54 with no symptoms you’re fine. Its nicer to have it lower so 160mg a week wouldve done the trick. After a while your body could lower hematocrit on its own. Especially if youve donated a few times. I should aim for a Bloodtest soon. I am curious to see where my hematocrit is after raising my dose to 175mg a week with a hematocrit of 51, thats a January test result.
 
Here's a letter from my Endo doctor. Haven't heard 1 peep out of him in 45 days. Unreal

Hello,
I received your results of cosyntropin stimulation test. It is normal.
Your testosterone level has been in high range several times in past which is causing secondary polycythemia (increased red blood cells) and predisposes you to enlarged prostate (BPH) in future.
I would suggest holding testosterone and reassessing lab- Total Testosterone in 3 months.
If your repeat total testosterone level is low, we could consider further testing including pituitary MRI.
I see you are already working with your primary regarding evaluation of underlying cause for your other symptoms.
Thank you.



Did he really just tell me to stop taking testosterone cold turkey? I had to read this 5 times because I couldn't believe it. What kind of Endo does this to someone?
You originally posted that you wonder if trt injections are worth it. You doctor's advice isn't that big of a deal in trying to troubleshoot your other issues. He is trying to make sure you're safe rather than worry about having your Test levels top of range.
 

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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