11 results
Monoclonal Gammopathy Testing
Strengths, Weaknesses and Accuracy Compared
 - SPEP 
 - IFE 
 - FLC
Monoclonal Gammopathy Testing ... Weaknesses and Accuracy ... Monoclonal #Gammopathy #Testing ... Nephrology #Laboratory #Comparison
Emergency physician interpretation of point-of-care ultrasound for identifying and grading of hydronephrosis in renal colic compared
Hydronephrosis #Comparison ... #Accuracy #Sensitivity ... #Specificity #Testing
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
Tuberculosis Testing ... (TST) False-negative ... microscopy • Testing ... recommended because false-negative ... Improves diagnostic accuracy
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False ... Metabolites • coca ... (High Rate of False ... not result in false ... DrugScreening #UDS #Testing
Small Bowel Obstruction Testing Accuracy
#Diagnosis #SBO #Testing #Accuracy #Sensitivity #Specificity #KUB #AbdominalXRay #CT #POCUS #LikelihoodRatio #Comparison
Bowel Obstruction Testing ... Accuracy #Diagnosis ... #SBO #Testing # ... Accuracy #Sensitivity ... LikelihoodRatio #Comparison
The following graph was prepared based on the latest information on Testing for the Diagnosis of
information on Testing ... tests that are accurate ... chance of giving a false ... it is likely a false ... InfectiousDiseases #HIVAIDS #Testing
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Test Results False ... anticoagulant medication False ... #OccultBlood #Testing ... #Differential #Accuracy
Clinic, Home, and Ambulatory Blood Pressure Measurements - Strengths and Weaknesses
(via https://twitter.com/JACCJournals/status/1088104323354185730 )

Clinic Measurements:
• BP measured
measured in a medical setting ... should be seated, resting ... factors affect the accuracy ... seated at home, resting ... #PrimaryCare #Comparison
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
breakthrough IFI in HM • False ... recipients, CGD pts • False ... Frozen ice-pops (in setting ... Galactomannan #diagnosis #comparison
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
probability of getting ... error Validity (“accuracy ... null when it’s false ... when it is indeed false