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Articles tagged with "level testing"

Should Hydroxychloroquine Level Testing Be Standard Care in Lupus?

Donald E. Thomas, MD, FACP, FACR, with Nathalie Costedoat-Chalumeau, MD, PhD, & Michelle Petri, MD, MPH, on behalf of the ARP Practice Committee  |  

The Johns Hopkins Lupus Center, Baltimore, has described its experience using hydroxychloroquine (HCQ) levels.1 Forty-four percent of its patients had levels below 500 ng/mL (partial nonadherence); 13% were severely nonadherent (<200 ng/mL). They were shown their results and educated on HCQ adherence. Adherence then improved to 80%; those with lower HCQ levels had higher disease…