32 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
Galactomannan Testing ... Sensitivity Specificity ... 96% • Higher specificity ... in BAL does not differentiate ... FalsePositives #Laboratory
Urinalysis Testing - UTI Sensitivity and Specificity
 - Leukocyte esterase 
 - Nitrite 
 - WBCs
Urinalysis Testing ... Sensitivity and Specificity ... #Urinalysis #Testing ... #Sensitivity #Specificity ... #Laboratory #UTI
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 ... #Sensitivity #Specificity ... #Laboratory #InfectiousDiseases
Causes of False Elevation and Reduction in HbA1c

== False Elevation ==
Decreased RBC turnover 
• Iron, B-12,
Causes of False ... in HbA1c == False ... • Asplenia Laboratory ... HbA1c #HgbA1c #Laboratory ... Diagnosis #DM2 #Differential
Tuberculous Pleural Effusions - Tests and Biomarkers
Age + fever + red blood cells + ADA -
sensitivity, high specificity ... sensitivity and specificity ... sensitivity and specificity ... #Tuberculosis #Laboratory ... #Testing #diagnosis
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False ... (High Rate of False ... not result in false ... DrugScreening #UDS #Testing ... #Laboratory #diagnosis
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
that may cause false ... DrugScreens #UDS #Laboratory ... FalsePositive #Testing
Acute Mesenteric Ischemia - Performance of 
Laboratory Tests (Sensitivity, Specificity) 
- WBC, Lactate, D-dimer, Urine I-FABP

#Mesenteric
Performance of Laboratory ... (Sensitivity, Specificity ... Ischemia #AMI #Testing ... #Diagnosis #Laboratory ... #Sensitivity #Specificity
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
Sensitivity & Specificity ... breakthrough IFI in HM • False ... BAL GM does not differentiate ... recipients, CGD pts • False ... Frozen ice-pops (in setting
Agents Causing Potential False-Positive Results With Urine Drug Screening 

#Urine #DrugScreens #UDS #Laboratory #Toxicology #Diagnosis #FalsePositive
Causing Potential False-Positive ... DrugScreens #UDS #Laboratory ... FalsePositive #Testing