Atorvastatin, commonly sold under the brand name Lipitor, is a prescription medication used to lower cholesterol and triglyceride levels in the blood. Like any other statin, it requires regular monitoring to ensure the dose is effective and safe for the patient.

According to the FDA, patients on atorvastatin should have their liver function tests (LFTs) checked before starting treatment and every 6-12 months after that, or if they experience symptoms of liver damage 1.

Additionally, patients taking atorvastatin should have their blood sugar levels checked as statins, including atorvastatin, have been associated with an increased risk of type 2 diabetes 2. It's recommended that patients have their blood sugar levels checked every 6-12 months while taking atorvastatin.

It's also crucial to monitor muscle symptoms, which can be a sign of muscle damage. Patients should consult their healthcare provider if they experience muscle pain, weakness, or tenderness, particularly if it's severe or persistent 3.

Patients should also discuss the importance of checking their kidney function and liver function with their healthcare provider. However, specific recommendations for these tests can vary depending on a patient's individual health status, so it's always best to consult a healthcare professional.

Sources:

1. https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/atorvastatin-hcl-tablets-fda-medwatch-safety-alert
2. https://www.drugs.com/atorvastatin.html
3. https://www.clevelandclinic.org/health/articles/11531-lipitor-side-effects