Adalimumab level analysis using high-performance liquid chromatography–mass spectrometry (LCMC-MS) is a specialized laboratory test designed to measure adalimumab concentration in blood serum. This test is primarily used to monitor the effectiveness of adalimumab therapy, a biologic medication used to treat various immune-related conditions such as rheumatoid arthritis and Crohn’s disease. Measuring adalimumab levels allows physicians to assess a patient’s response to treatment and determine appropriate dosing to achieve maximum efficacy with minimal side effects. The LCMC-MS technique provides high accuracy in measuring chemical compounds, making it an important tool for monitoring and optimizing treatment strategies.