http://en.wikipedia.org/wiki/Pharmacokinetics

Characteristic	Description	Example value	Symbol	Formula
Dose	Amount of drug administered.	500 mg		Design parameter
Dosing interval	Time between drug dose administrations.	24 h		Design parameter
Cmax	The peak plasma concentration of a drug after administration.	60.9 mg/L		Direct measurement
tmax	Time to reach Cmax.	3.9 h		Direct measurement
Cmin	The lowest (trough) concentration that a drug reaches before the next dose is administered.	27.7 mg/L		Direct measurement
Volume of distribution	The apparent volume in which a drug is distributed (i.e., the parameter relating drug concentration to drug amount in the body).	6.0 L
Concentration	Amount of drug in a given volume of plasma.	83.3 mg/L
Elimination half-life	The time required for the concentration of the drug to reach half of its original value.	12 h
Elimination rate constant	The rate at which a drug is removed from the body.	0.0578 h−1
Infusion rate	Rate of infusion required to balance elimination.	50 mg/h
Area under the curve	The integral of the concentration-time curve (after a single dose or in steady state).	1,320 mg/L·h
Clearance	The volume of plasma cleared of the drug per unit time.	0.38 L/h
Bioavailability	The systemically available fraction of a drug.	0.8
Fluctuation	Peak trough fluctuation within one dosing interval at steady state	41.8 %		where
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