What does the Methotrex Scr test evaluate?

The Methotrex Scr test specifically evaluates the levels of methotrexate in the bloodstream. Methotrexate is a medication commonly used to treat certain types of cancer and autoimmune diseases. Monitoring the levels of this drug is crucial because it has a narrow therapeutic window, meaning that the difference between a therapeutic dose and a toxic dose is small. High levels of methotrexate can lead to serious side effects and complications, including organ toxicity, particularly to the kidneys. Therefore, this test is essential for ensuring patient safety and optimizing treatment plans by allowing healthcare providers to adjust dosages based on the patient's specific needs and response to therapy.