Timing of labs based on different TRT protocols

From my reading here it sounds on most protocols you draw labs right before your next shot, to get your lowest reading. In my case I inject daily (have low SHBG) with Test C in the morning around 7am. If I usually get labs done around 9-10am in the morning will it show elevated levels if I took my shot a couple hours before even though I'm using the slower release Test C?

I believe the last time I checked my levels while on a daily I waited till after the labs to then inject. I figure I will do that again to compare the difference of being on a lower dose now more accurately to my last labs.

Curious if it would show much of a difference though. I'm assuming since I'm doing daily with Test C my levels don't go up or down much? Is that correct?

Feel free to open the discussion more to lab timing of different protocols if it helps others.
 
When on daily injections it doesn't really matter when you draw labs, levels are very steady that the difference between peak and trough is miniscule. This is pretty much the case with EOD injections as well.
 
Nearly five years into daily injections and I draw all over the place in terms of time. Initially, and for many years, that was because I, a Canadian, had no access to the sensitive e2 test. I regularly crossed the border and would arrange for a DiscountedLabs blood draw. Sometimes in the morning, sometimes in the late afternoon; the schedule controlled me, I didn't control the schedule. Erie, Pennsylvania, Los Angeles, Chicago, Atlanta - different time zones and different times.

My protocol was locked in and only once did I have a value come back that seemed out of line - a drop in total testosterone. Feeling good, I didn't worry about it and that number bounced up a few months later.

You should be fine.
 

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

Beyond Testosterone Podcast

Online statistics

Members online
3
Guests online
336
Total visitors
339

Latest posts

Back
Top