19 results
1,3-Beta-D-Glucan and Galactomannan Testing Sensitivity Specificity and False Positives
1,3-Beta-D-Glucan
 • Cell wall component of many fungi
Mucormycosis • Neg (<60 pg ... Fungal #Testing #FalsePositives
Acute Heart Failure Exacerbation - Diagnostic Likelihood Ratios
+LR > 3.5:
 • Overall judgement of ED physician
• BNP < 100 pg
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix

Sensitivity refers to the test's ability to correctly
#Specificity #FalsePositive
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
Toxicology #Diagnosis #FalsePositive
Radial Fracture Due to Parathyroid Carcinoma- ...A plain radiograph of the left arm showed a diaphyseal
level of 3590 pg ... hormone level was 48 pg
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
#FalsePositives
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
#FOBT #Guaiac #FalsePositives
Noncardiogenic Pulmonary Edema - Differential Diagnosis Framework

NCPE Pathophysiology:
Noncardiogenic pulmonary edema occurs because of excessive pulmonary capillary
BNP level <100 pg
Vitamin B12 (Cobalamin) Deficiency
Etiology:
 • Vit B12 - aka cobalamin. Present in foods derived from animal
B12 level (< 200 pg
Cancer screening: Do the harms outweigh the benefits? #EBM #epidemioliogy #PubilcHealth #PrimaryCare #HONC #Screening #AdverseEffects #Harms
AdverseEffects #Harms #FalsePositives