https://www.selleckchem.com/pr....oducts/gsk2193874.ht
OBJECTIVE Despite the pivotal role that hydroxychloroquine (HCQ) plays in treating SLE, less than 50% of patients take HCQ as prescribed. Measurement of HCQ blood levels can help clinicians distinguish nonadherence, versus lack of efficacy of HCQ. We systematically reviewed publications and performed a meta-analysis to examine the correlation between HCQ levels and 1) nonadherence, and 2) SLEDAI scores, in SLE. METHODS A comprehensive search was performed. We included observational and interventional studies that measured HCQ levels,