when to do blood work when taking testosterone injections?

roadglide

Member
Guess I just wanted to clarify since Defy email says to do labs before next injection. Does this mean that if you inject on Thursday evening that you should do labs on Thursday morning?

Maybe do labs Monday morning at 730 then inject immediately after? My injection Monday will be 1-2 hour late as I usually do it around 530-6 am.

Either one work?
 
Guess I just wanted to clarify since Defy email says to do labs before next injection. Does this mean that if you inject on Thursday evening that you should do labs on Thursday morning?

Maybe do labs Monday morning at 730 then inject immediately after? My injection Monday will be 1-2 hour late as I usually do it around 530-6 am.

Either one work?

No, do labs on Thursday evening before you inject or Monday morning before you inject. It's ok to be late injecting, on Monday.
 
So you think labs Thursday morning at 8am and injecting at 6pm is not a good idea?

I do...approaching 12hrs, esp if you're a low SHBG guy, could make a big difference in your TT. In this popular Mon AM, Thurs PM scenario, I would only pull labs on a Monday morning, and then inject. I don't think labs late in the day like Thursday night, is the best tactic.
 
I do...approaching 12hrs, esp if you're a low SHBG guy, could make a big difference in your TT. In this popular Mon AM, Thurs PM scenario, I would only pull labs on a Monday morning, and then inject. I don't think labs late in the day like Thursday night, is the best tactic.


Out of curiosity Vince what level do you like your T at?
 
...approaching 12hrs, esp if you're a low SHBG guy, could make a big difference in your TT. In this popular Mon AM, Thurs PM scenario, I would only pull labs on a Monday morning, and then inject. I don't think labs late in the day like Thursday night, is the best tactic.

Vince Carter's points are well taken. In my case, some years ago, 12 hours made a significant difference in the total testosterone value (I am low SHBG).
 

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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.

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Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

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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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