Lipitor is a brand name for the drug atorvastatin, which is a type of statin used to lower cholesterol levels and reduce the risk of heart disease [2]. According to Drug Patent Watch, atorvastatin was first approved by the FDA in 1996 and is now available in generic form [1].

As for whether Lipitor can be detected in blood tests, a 2005 article from The Spokesman-Review states that a blood test can reveal the effects of Lipitor on cholesterol levels [3]. However, this article does not specify whether the drug itself can be detected in a blood test.

The British Heart Foundation explains that statins like Lipitor are usually taken once a day, and that it takes about two weeks for the drug to reach its full effect [2]. This suggests that it may be possible to detect the presence of Lipitor in a blood test during this time period.

Overall, while it is not entirely clear whether Lipitor can be detected in a blood test, it is known that the drug can have an effect on cholesterol levels that can be measured through blood tests.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.bhf.org.uk/informationsupport/heart-matters-magazine/medical/drug-cabinet/statins
[3] https://www.spokesman.com/stories/2005/may/14/blood-test-can-reveal-effects-of-lipitor/