463 results
Helicobacter Pylori (H. pylori) Infection - Diagnosis and Management - GrepMed Handbook
Presentation: Dyspepsia / Peptic Ulcer
Diagnosis and Management ... Ag, Urea Breath Testing ... (UBT) - ↑ false ... hold 2w before testing ... (IgG) - cannot differentiate
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
Fecal Occult Blood Testing ... evaluation • False ... cauliflower, ETOH • False ... Does not change management ... to unnecessary testing
1,3 Beta-D-Glucan and Galactomannan - Pathogens, and Testing Characteristics
1,3 ß-D-glucan:
 • Most fungi excluding mucor and
Pathogens, and Testing ... and pneumocystis False ... other fungi • False ... Galactomannan #Pathogens #Testing
Causes of False Elevation and Reduction in HbA1c

== False Elevation ==
Decreased RBC turnover 
• Iron, B-12,
Causes of False ... in HbA1c == False ... Transfusions == False ... Transfusions #False ... Diagnosis #DM2 #Differential
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
that Can Cause False ... Amphetamine false ... Cannabinoid false ... Benzodiazepine false ... #drug #tests #differential
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
Tuberculosis Testing ... Tuberculin skin testing ... (TST) False-negative ... recommended because false-negative ... #Tuberculosis #Testing
False Positive Lung Point on POCUS
Lung-Cardiac Point and Lung-Diaphragm Point
These images highlight selected differentials to pleural
False Positive Lung ... highlight selected differentials ... UAlberta_Sono #False ... ultrasound #pulmonary #differential
Acute Kidney Injury - Differential Diagnosis Framework
PRERENAL:
 - Intrarenal vasoconstriction-hemodynamically mediated
 - Systemic vasodilation
 - Volume
Kidney Injury - Differential ... urinalysis, labs - Management ... renal biopsy - Management ... ultrasonography - Manaqement ... #Injury #AKI #Differential
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False ... (High Rate of False ... NSAlDs resulting in false-positive ... not result in false ... DrugScreening #UDS #Testing
Algorithm for the diagnosis of chronic diarrhea.
It is usually impractical to test and treat the many
diarrhea before testing ... and treating to ... reduce unnecessary testing ... the much smaller differential ... Diarrhea #Algorithm #Testing