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Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False Positives ... Rate of False Positives ... Barbiturates • ibuprofen ... thioridazine, ibuprofen ... mainly consist of ibuprofen
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Can Cause False Positives ... yielding false-positive ... medication like ibuprofen ... : • Ibuprofen ... : • Ibuprofen (
False Positive Urine Drug Screens
Amphetamines - Amantadine, brompheniramine. bupropion, chlorpromazine, desipramine, ephedrine, isometheptene, isoxsuprine, labetalol, phentermine,
False Positive Urine ... Barbituates - Ibuprofen ... hemp-containing foods, ibuprofen ... diphenydramine, ibuprofen ... quetiapine #False #Positive
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
may cause false positive ... Diphenhydramine, Ibuprofen
Management of Supine Hypertension
 • Avoid offending agents
 • Avoid lying down during the day; rest
in the seated position ... pressor agents: Ibuprofen
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
Pericarditis can be seen on EKG with diffuse ST elevations without reciprocal changes along with diffuse
pericarditis is high dose ibuprofen
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
Therapeutic Advantages and Disadvantages of some NSAIDs
Salicylates: Aspirin, Salicylate salts, Diflunisal
Acetic acids: Indomethacin, Sulindac, Tolmetin
Propionic acids:
Propionic acids: Ibuprofen
Jugular Venous Pressure Measurement
Examiner places the patient in a reclined position and puts the base of
in a reclined position ... Positive: JVP >