can antibiotics cause a false positive for benzos?
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Antibiotics. Most antibiotics have not been indicated to cause false-positives with UDS immunoassays; however, quinolones and rifampin have been documented in small studies.
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Most studies suggest that gabapentin is highly unlikely to cause a 'false-positive' for any of the drugs being looked for on a standard 5-panel test due to its difference in structure and molecular composition. Nevertheless, there are some studies that report that it may interfere with certain tests for amphetamines.
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You could have a false-positive result if you have blood or protein in your pee. Certain drugs, such as tranquilizers, anticonvulsants, hypnotics, and fertility drugs, could cause false-positive results. If you get a negative result, you're probably not pregnant.
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Abstract. Amoxicillin has been causally linked in the lay and medical literature to false-positive urine drug screens for cocaine metabolites. An exhaustive search of the peer-reviewed medical literature revealed no data to support this link.
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Key facts to know about antibiotic safety: Antibiotics can have side effects including allergic reactions and serious, possibly life-threatening diarrhea caused by the bacteria (germ) Clostridium difficile (C. diff). Antibiotics may also interfere with other drugs you may be taking.
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But some people have nausea, diarrhea, and gas when they take them. Antibiotics can kill the “good” bacteria in your body, along with the “bad,” and upset the healthy balance that makes your digestive system work like it should.
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Many Gram-positive bacilli are part of the normal skin flora thereby able to contaminate blood cultures or colonize intravenous catheters. Identifying these organisms in a blood culture may be suggestive of false-positive results. They include Propionibacterium acnes, Corynebacterium species and Bacillus species.
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Allergic reactions to antibiotics. If you are allergic to antibiotics, you get signs and symptoms like a rash, swelling of the face or difficulty breathing. A severe allergic reaction is known as anaphylaxis, and usually occurs within an hour of taking an antibiotic.
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Moxifloxacin treats infections caused by gram-positive and gram-negative bacteria like Streptococcus anginosus, Streptococcus constellatus, Streptococcus pneumonia, Enterobacter cloacae, Escherichia coli, Haemophilus influenza, Klebsiella pneumonia, and Moraxella catarrhalis.
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This study certainly does suggest some causation mainly with fluoroquinolones and macrolide classes, but it is also well known that infection itself can lead to blood sugar fluctuations. My own personal experience did correlate azithromycin with elevated fasting blood sugar levels, but this is merely anecdotal.
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Most medicines, over-the-counter and prescription, including birth control pills and antibiotics, should not affect the results of a home pregnancy test. Only medicines that have the pregnancy hormone hCG in them can give a false positive test result.
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Ibuprofen, Sertraline, Sudafed, prednisone, baby soap, antiretroviral drugs, cold medication, and foods that contain high amounts of yeast have been known to show a false positive result. Can you picture your name being dragged in mud because of testing positive for drug use?
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A "positive" or abnormal test is when bacteria or yeast are found in the culture. This likely means that you have a urinary tract infection or bladder infection. Other tests may help your provider know which bacteria or yeast are causing the infection and which antibiotics will best treat it.
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You can test positive even though you have not actively used a drug. It may bring a false positive after the ingestion of natural, harmless substances. These include food with yeast, cold medication, poppy seeds, ibuprofen, and antiretroviral drugs.
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20,21 One of the unique findings in our study was that false-positive results were seen at therapeutic drug levels. None of our patients had a known overdose of carbamazepine or oxcarbazepine by history or physical examination findings, nor did any have symptoms.
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Macrolide antibiotics, cephalosporins, penicillins, and fluoroquinolones may cause more stomach upset than other antibiotics. Ask your doctor or pharmacist whether to take your antibiotic with food. Eating can help reduce stomach side effects from certain antibiotics such as amoxicillin and doxycycline (Doryx).
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There are several practical reasons why dipstick tests and MSUs can miss the presence of infection. Any of these factors can give a negative test result: Antibiotics that partly clear an infection will reduce the levels of bacteria in your urine. Drinking a lot to try to flush out an infection will dilute your urine.