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Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Can Cause False Positives ... yielding false-positive ... can cause false positives ... Amphetamine false positives ... • Sulpiride • Tramadol
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
may cause false positive ... Ibuprofen, Ketamine, Tramadol
False Positive Urine Drug Screens
Amphetamines - Amantadine, brompheniramine. bupropion, chlorpromazine, desipramine, ephedrine, isometheptene, isoxsuprine, labetalol, phentermine,
False Positive Urine ... thioridazine, tramadol ... quetiapine #False #Positive
Tramadol, TramaDONT - Reasons to Avoid Prescribing Tramadol
Highly Variable Opioid Effects: 
 - Low, poor and
Tramadol, TramaDONT ... Avoid Prescribing Tramadol ... ChillaPharmD #Tramadol ... #TramaDONT #pharmacology
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
TP + FN) = true positives ... disease absent Positive ... TP + FP) = true positives ... / all positives ... all negatives Positive
Intern Pocket Cards - Pharmacologic Pain Management Options
Anti-inflammatory:
 • Acetaminophen (24 hours: < 3-4g in healthy
hydromorphone, fentanyl, tramadol ... Fentanyl 0.15 IV • Tramadol
Vancomycin and Dalbavancin (lipoglycopeptide antibiotics) - Antibiotics Class Overview

Mechanism: Glycopeptide -  inhibits cell wall synthesis
synthesis in Gram positives ... Spectrum: gram positive ... or proven gram positive ... choice for gram positive
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False Positives ... Rate of False Positives ... resulting in false-positive ... result in false positives ... enough to prevent positive
Jugular Venous Pressure Measurement
Examiner places the patient in a reclined position and puts the base of
in a reclined position ... Positive: JVP >
Serotonin Syndrome Drug Precipitants and Pharmacology
↑ Serotonin Formation: Tryptophan, Oxitriptan
↑ Serotonin Release: Amphetamines, Cocaine, Mirtazapine
↑ Serotonin
Cocaine, MDMA, Tramadol