SO, for the sake of learning, interest and something to do while i am off work - i have decided to make a Testosterone propionate Half life accurate model.

It is going to be the first 4 or so weeks of a cycle, because 12 weeks with a cyp ester would take - oh, about a month.

This gets very confusing, but look into it and it will allow you to visualize and understand what was once before a very difficult and alien idea.

Some of the advanced guys will know this, but hopefully they wont have seen it written, so i hope this may become a sticky!! lol!

We will be using 100mg of Prop, EOD Sun, Tue, Thu for a total of 300mg a week, this is low but it is near enough to a real cycle (unlike 100mg 1x p/w which would be much easier to write!) for real world applications. The half life of PROP is 4.5 days, for this model i will make it 4… give me a break huh? This is alot of work!

As for the maths… half life works like this:

If the half life is 4 days, the 100mg is half the original active dose in 4 days, 4 days after that that half is halved again, 4 days later, another half. It is simple enough, but it gets complicated when looking at the additions of more and more of the drug and the breakdown of those doses too!

S- 100MG = 100mg

M- > >87mg = 87mg

T- 100MG+75mg = 175mg

WK1W- > >87mg+62mg = 149mg

T- 100MG+75mg+50mg = 225mg

F- > >87mg+62mg+44mg = 193mg

S- 75mg+50mg+38mg = 163mg

S- 100MG+67mg+44mg+31mg = 242mg

M- > >87mg+50mg+38mg+25mg = 200mg

T- 100MG+75mg+44mg+31mg+22mg = 272mg

WK2W- > >87mg+67mg+38mg+25mg+18mg = 235

T- 100MG+75mg+50mg+31mg+22mg+15mg = 293

F- > >87mg+67mg+44mg+25mg+18mg+12mg = 253

S- 75mg+50mg+38mg+22mg+15mg+10mg = 210

S- 100MG+67mg+44mg+31mg+18mg+12mg+9mg = 281

M- > >87mg+50mg+38mg+25mg+15mg+10mg+7mg = 232

T- 100MG+75mg+44mg+31mg+22mg+12mg+9mg+6mg = 299

WK3W- > >87mg+67mg+38mg+25mg+18mg+10mg+7mg+5mg = 257

T- 100MG+75mg+50mg+31mg+22mg+15mg+9mg+6mg+5mg = 313

F- > >87mg+67mg+44mg+25mg+18mg+12mg+7mg+5mg+4mg = 269

S- 75mg+50mg+38mg+22mg+15mg+10mg+6mg+5mg+3mg = 224

S- 100MG+67mg+44mg+31mg+18mg+12mg+9mg+5mg+4mg+3mg = 293

M- > >87mg+50mg+38mg+25mg+15mg+10mg+7mg+5mg+3mg+2mg

T- 100MG+75mg+44mg+31mg+22mg+12mg+9mg+6mg+4mg+3mg+2mg=308

WK4W- > >87mg+67mg+38mg+25mg+18mg+10mg+7mg+5mg+3mg+2mg

T- 100MG+75mg+50mg+31mg+22mg+15mg+9mg+6mg+5mg+3mg+2mg=313

F- > >87mg+67mg+44mg+25mg+18mg+12mg+7mg+5mg+4mg+2mg

S- 75mg+50mg+38mg+22mg+15mg+10mg+6mg+4mg++3mg = 223

S- 100MG+67mg+44mg+31mg+18mg+12mg+9mg+5mg+3mg+3mg = 292

M- > >87mg+50mg+38mg+25mg+15mg+10mg+7mg+5mg+3mg = 240

JJ