Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the blood. According to the Mayo Clinic [3], it is important to have liver function tests done before starting atorvastatin and periodically thereafter to monitor for potential liver damage.

If a patient misses a scheduled liver test while taking Lipitor, it is important to reschedule the test as soon as possible to monitor any potential liver damage. According to Medical News Today [2], liver damage is a rare but serious side effect of atorvastatin. The article also notes that patients should contact their doctor immediately if they experience symptoms such as yellowing of the skin or eyes, dark urine, or abdominal pain, as these could be signs of liver damage.

In summary, missing a scheduled liver test while taking Lipitor is not ideal, but it is important to reschedule the test as soon as possible to monitor for potential liver damage. It is also important to contact a doctor immediately if any symptoms of liver damage are experienced.

Sources:
[2] https://www.medicalnewstoday.com/articles/atorvastatin-oral-tablet
[3] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/proper-use/drg-20067003