Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Compound chloroquine section top Chloroquine and prescribing information What is prescription drug hydroxychloroquine used for Aug 30, 2011 Diagnosis Hydroxychloroquine-induced retinal toxicity Discussion. Chloroquine CQ and hydroxychloroquine Plaquenil HCQ have been used for many years, initially for the treatment of malaria but now more commonly for the treatment of inflammatory diseases such as rheumatoid arthritis and lupus 1. It is now considered for new disease applications in diabetes, heart disease and adjunct cancer therapies 2. AVISE HCQ is an advanced drug monitoring test that provides accurate measurement of hydroxychloroquine HCQ levels in whole blood to help physicians assess their patients' exposure to hydroxychloroquine therapy and minimize the effects of Hydroxychloroquine side effects. Hydroxychloroquine is a well tolerated medication for various rheumatologic and dermatologic conditions. Its main side effects are gastrointestinal upset, skin rash, headache, and ocular toxicity. Within the eye, hydroxychloroquine negatively impacts the cornea, ciliary body, and retina. Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. Hydroxychloroquine diagnostic tests Sjogren's syndrome - Diagnosis and treatment - Mayo Clinic, Hydroxychloroquine Test - Hydroxychloroquine Side Effects. Hydroxychloroquine sarcoidosis dosage The tests listed by specialty and category are a select group of tests offered. For a complete list of Quest Diagnostics tests, please adjust the filter options chosen, or refer to our Directory of Services. Hydroxychloroquine, Blood Test Detail Quest Diagnostics. Hydroxychloroquine toxicity - EyeWiki. Recommendations on Screening for Chloroquine. DiagnosisTreatmentLifestyle and Home RemediesPreparing For Your Appointment Abstract. Background The American Academy of Ophthalmology recommendations on screening for chloroquine CQ and hydroxychloroquine HCQ retinopathy are revised in light of new information about the prevalence of toxicity, risk factors, fundus distribution, and effectiveness of screening tools. HCQ Hydroxychloroquine is an antimalarial drug used to treat or prevent malaria. It is highly effective against erythrocytic forms of Plasmodium, but not effective against exoerythrocytic forms of parasites. Hydroxychloroquine is also used to treat symptoms of acute or chronic rheumatoid arthritis and lupus erythematosus.