What is the story with half lives?!

[jakecody]

Should be simple.  the half life of Test E is 10.5 days right?  but then I read articles that say it is 5 days or 6 days or as long as 14 days.  1.5x carbons or as little as 0.7x carbons.  Some articles even claimed that the half life would depend on the injection site.  Other articles said that no matter what a large portion of the steroid would metabolize within the first 24 hours. 

Division, Arnold, Overload, Rim, or anyone who knows c'mmon guys just looking for a simple answer:  WHAT IS THE HALF LIFE OF TEST E IN THE HUMAN BODY?

[Rimbaud]

Most of what I've read says 10-12 days. However, if you look hard enough you'll find almost anything. I've seen oral winny with the half-life of 72 hours listed.

[trab]

Missunderstanding. Yur correct on the 10 days, BUT - Thats the time its reduced to 1/2.
Then 10 days later, 1/2 of what was left and so on.

But we keep adding MORE! 

When ya take a shot, most guys "Feel" it last about 5-7 days -

             BUT its eliminated like so....
2cc shot of Testoviron (500mgs) in 10 days is reduced to 250, in 20 days 125, in 30 days 62.5,... etc.
LOOK HOW LONG IT HANGS AROUND! GOOD GOD, LOTS OF GUYS THINK THEY CLEAN FOR WEEKS, START A "NEW"    CYCLE, AND WERE IN FACT NEVER OFF. (sus Is even WORSE!)

RDW is the king of spread sheet illustrating theis, and how we achieve  "steady state plasma levels"
after a spell.

I believe the thread was started by Clayton and is "Test Dose". Check his chart. Very Good one.

[Overload]

It's roughly 10 days from what i've researched.

I always injected Test E/C twice a week to try and keep levels stable.

[RDW]

Should be simple.  the half life of Test E is 10.5 days right?  but then I read articles that say it is 5 days or 6 days or as long as 14 days.  1.5x carbons or as little as 0.7x carbons.  Some articles even claimed that the half life would depend on the injection site.  Other articles said that no matter what a large portion of the steroid would metabolize within the first 24 hours. 

Division, Arnold, Overload, Rim, or anyone who knows c'mmon guys just looking for a simple answer:  WHAT IS THE HALF LIFE OF TEST E IN THE HUMAN BODY?

Jake,

You asked me this in a PM if I'm not mistaken and I gave you a lengthy detailed explaination.  The half life is 10.5 days, it happens to be 1.5 * the number of carbon atoms as is the general case of the standard ester hydrocarbon formation.  Some, however, do not follow this pattern because they are different structures.  The simple answer to your question is 10.5 days, I'm almost certain I gave you a very detailed answer and may even have included graphs, but I don't have the time to do that again.

[trab]

http://www.getbig.com/boards/index.php?topic=166147.0

CHart Link.
1x vs 2x EW shots till steady state plasma level achieved.

Build up must also be taken into account when thinking about 1/2 life.
Them 1/2 lives pile on till a certian point. Thies graph shows that clearly.

[jakecody]

RDW you are right.  i PM you and you did give a detailed explanation.  But that chart made everything clear.  Still, correct me if I'm wrong but if i inject 500 mg/week of Test E isn't it a matter of time before the TOTAL Test amount in my system would reach 1gm.

[RDW]

RDW you are right.  i PM you and you did give a detailed explanation.  But that chart made everything clear.  Still, correct me if I'm wrong but if i inject 500 mg/week of Test E isn't it a matter of time before the TOTAL Test amount in my system would reach 1gm.

NO! It will NEVER reach more than your weekly injected amount! How old are you?  Do you not understand exponential decay?  I didn't have my options set to save sent messages, copy and paste what I wrote you and I will explain it if you don't understand. I don't feel like writing that all out again.

[jakecody]

RDW here it is. 

After 10 days you have metabolized 250mg of test and it is gone, you have 250mg left waiting to be metabolized from the first shot, the 2nd shot hasn't begun metabolizing yet immediately after injection.  After 20 days you have 125 from shot 1 and 250 from shot 2,
30 days you have 62.5 + 125 + 250=437.5,
40 days you have 31.25 + 62.5 + 125 + 250 = 468.75,
50 days you have 16.75 + 31.25 + 62.5 + 125 + 250 = 484.375
60 days you have 8.375 + 16.75 + 31.25 + 62.5 + 125 + 250 = 492.75

This will continue to increase but very slowly due to the exponential decay of half lives, it will continue to approach 500 (or however much you are injecting per half life period) but never quite reach it.

I hope this helps.

RDW

I understand the exponential decay but what i was trying to bring out is that i inject 500 mg/week not every 10 days.  So by day 30 i injected 4 times not 3.  By day 50 i injected 7 times not 5...  i have to believe it has an effect on Total amount of Test in the system

[RDW]

RDW here it is. 

After 10 days you have metabolized 250mg of test and it is gone, you have 250mg left waiting to be metabolized from the first shot, the 2nd shot hasn't begun metabolizing yet immediately after injection.  After 20 days you have 125 from shot 1 and 250 from shot 2,
30 days you have 62.5 + 125 + 250=437.5,
40 days you have 31.25 + 62.5 + 125 + 250 = 468.75,
50 days you have 16.75 + 31.25 + 62.5 + 125 + 250 = 484.375
60 days you have 8.375 + 16.75 + 31.25 + 62.5 + 125 + 250 = 492.75

This will continue to increase but very slowly due to the exponential decay of half lives, it will continue to approach 500 (or however much you are injecting per half life period) but never quite reach it.

I hope this helps.

RDW

I understand the exponential decay but what i was trying to bring out is that i inject 500 mg/week not every 10 days.  So by day 30 i injected 4 times not 3.  By day 50 i injected 7 times not 5...  i have to believe it has an effect on Total amount of Test in the system

No, it is the same, because yes the length of 1 unit of time here (10 days) is longer than you are injecting, but that means it is factoring in more test being metabolized. So it would look like this:

Assumes injecting on Monday and Thursday 250mg Test E (500mg/week)
(Normal male hormone range is about 35-100mg/week and 5-15mg/day)
These figured do NOT account for ester weight, multiple each value by .79 for actual test amounts

Day 10 (Wed.) - 213.32 weekly average, 33.56mg free test that day
Day 20 (Sat.)- 351.85 weekly average, 51.64mg free test that day
Day 30 (Tues.)- 423.44 weekly average, 62.53mg free test that day
Day 40 (Fri.) - 460.43 weekly average, 68.95mg free test that day
Day 50 (Mon.) - 479.55 weekly average, 73.93mg free test that day
Day 60 (Thurs.) - 489.43 weekly average, 77.34mg free test that day
Day 70 (Sun.) - 494.54 weekly average, 63.81mg free test that day

All of this can be easily figured by using equations for exponential decay.

[RDW]

Jake,

I haven't seen a relpy by you so I'm assuming you understand what I explained, if not let me know.