Definition: "half-life"? No guessing, please.
I am fixing to write a little prog that calculates, based on shot history, dosage, and halflife, the amount of a drug still in the body. This will not be some hokey little java applet that drops turds and cookies all over your puter... this will be a small DOS app that you download and keep, and run when you like, whether you are online or off. Anyway, I just need to verify just EXACTLY what is meant by "half-life". Is it that length of time that it takes for the body to eliminate half of the drug? That is the obvious answer, but is it technically correct? I need to know before I start writing code. Can I work under the assumption that if the subject injected 200mg of a drug 10 days ago and it has a half-life of 10 days, that he still has 100mg of it in his body? Is this too simplistic a view?