my next cycle

[The Deadlifting Dog]

Test c has a half live of 12 days so on day 13 it should be all out

That answer is wrong on two fronts.
You are wrong on the half life and you are wrong on how half lives work.

Test C has a half life of approximately 8 days.

Also, after one half life only half of the compound is gone.
Day 0 - 100%
Day 8 - 50%
Day 16 - 25%
Day 24 - 12.5%
Day 32 - 6.25%
Etc...

[charger69]

That answer is wrong on two fronts. You are wrong on the half life and you are wrong on how half lives work. Test C has a half life of approximately 8 days. Also, after one half life only half of the compound is gone. Day 0 - 100% Day 8 - 50% Day 16 - 25% Day 24 - 12.5% Day 32 - 6.25% Etc...

Are you stating that this is a first order reaction (1/2 life constant) or was this just a generic model for educational purposes? I am presently trying to find a relation between the 1/2 life and injection frequency. Little by little I am trying to put the puzzle together. You may be able to point me to some studies.