False-negatives and false-positives from immunoassays can lead to adverse consequences for patients and providers. By identifying medications that contribute to false-negatives and false-positives, pharmacists decrease misinterpretations from urine drug screens. Chloroquine transfection protocol Hydroxychloroquine sulfate t Plaquenil side effects memory Can i take plaquenil for heart attack A false positive drug test means that one gets a positive result for the drug but in reality, they didn’t take it. One might be wondering how it is possible for to test positive if one haven’t taken any drugs. However, it’s quite possible. And studies suggest false positive test results occur in 5 to 10% of the total cases. Used to treat ADHD, Ritalin is a well-known cause of false positive tests for amphetamine, methamphetamine, and LSD. 12 Doxylamine. Doxylamine, found in Unisom and other over-the-counter sleep aids, may cause a false positive on drug tests for methadone, opiates, or PCP. 13 Sertraline Zoloft Sertraline is an antidepressant. Taking. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including rash, itching/swelling especially of the face/tongue/throat, dizziness, trouble breathing. This is not a complete list of possible side effects. Pharmacists can provide guidance in selecting appropriate drug therapies that are less likely to cause false readings, thus decreasing the need for additional testing. Unexpected results from urine immunoassays should have a confirmatory gas chromatography–mass spectrometry or a high-performance liquid chromatography test performed. Plaquenil false positive methadone Will you have Drug screen false positive with Plaquenil., Medications That Can Cause a False Positive on Drug Tests. Chloroquine and itchingChloroquine hydroxychloroquine quinHydroxychloroquine weight based dosing 5 mg kg ideal bo False-positive methadone levels have been documented with diphenhydramine 100 to 200 mg 2-4,14 and doxylamine intoxication. 4,15 Additionally, doxylamine intoxication has produced false-positive opiate 14 and PCP 2 levels, and brompheniramine use may cause false-positive amphetamine 4 and LSD 3,9 levels. Consider using second-generation. Urine Drug Screening Minimizing False-Positives and False.. Plaquenil Oral Uses, Side Effects, Interactions.. Why Would A Urine Test Show Positive For Fentanyl When I've Never Taken.. Stars. Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Several of these medications for mental disorders can lead to false positive tests. Quetiapine, which treats schizophrenia and bipolar disorder, can wrongly show that you have methadone in your urine. Hi, Thank you for your input, There are several drugs that can cause false positive urine test for methadone, These are phenothazines, verapamil and related drugs, barbiturates, narcotic analgesics. In your case your medicine loratab, wellbutrin, cardizem and xanax are the possible medicine that can cause your methadone urine test positive.