Question

How many hours after injection does a maximum concentration of the drug occur in the bloodstream? Round answer to nearest hundredth.

Answer 1

The concentration of the drug in bloodstream is maximum immediately after injection.

Explanation:

The concentration of drug in a patient's bloodstream is modeled as an exponential function,

`C(t) = C_(0)e^(-rt)`

where

C(t) is the concentration of drug at ant time t,

C₀ is the concentration immediately after injection,

r is a rate constant, which indicates the removal of drug from body through metabolism.

We see that, the C(t) is maximum when t=0, i.e, immediately after the drug is injected.