So I've updated it to show a little bit of the difference between the well-stirred and parallel tube models, with more of a lean toward people starting with in vitro data, and appropriately renaming it. Link is here.

Btw, @KRHornberger , I dunno if your usual audience might find this a useful little tool or if there's any small changes you think would be helpful.

https://jtsdmpk.shinyapps.io/HepaticClearance/