Celecoxib serum level analysis (Celecoxib, Serum Level) is a laboratory test used to measure the concentration of celecoxib in the blood. Celecoxib is a nonsteroidal anti-inflammatory drug (NSAID) that is effective in relieving pain and inflammation, particularly in conditions such as rheumatoid arthritis and osteoarthritis. This test helps physicians evaluate treatment effectiveness and adjust the appropriate dosage for the patient, thereby helping to avoid potential side effects. The test is usually performed as part of follow-up for patients receiving celecoxib to ensure optimal therapeutic benefit.