12 results
COVID19 Testing - PCR vs CT - Sensitivity and Specificity

Original Data via https://pubs.rsna.org/doi/full/10.1148/radiol.2020200642

Admission laboratory patterns in
COVID19 Testing ... - PCR vs CT - Sensitivity ... and Specificity ... .2020200642 Admission laboratory ... #Coronavirus #VisualAbstract
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
test - High sensitivity ... and specificity ... Widely variable sensitivity ... and specificity ... #Testing #Laboratory
1,3 Beta-D-Glucan and Galactomannan - Pathogens, and Testing Characteristics
1,3 ß-D-glucan:
 • Most fungi excluding mucor and
Pathogens, and Testing ... Glucan-containing gauzes ... Galactomannan #Pathogens #Testing ... Characteristics #Sensitivity ... #Specificity #Laboratory
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 ... #FalsePositives ... #Laboratory #sensitivity
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
present in 15% of cases ... Demyelinating disease ... caused by the JC ... of serum CrAg testing ... comparable to CSF testing
Invasive Aspergillus (IA) - Diagnosis and Management
Aspergillus is ubiquitous in nature. Most invasive infections are caused
infections are caused ... Diagnosis and Testing ... Galactomannan sensitivity ... and low specificity ... vori Infectious Diseases
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... Sensitivity (rule ... Specificity (rule ... FN) Higher specificity ... but not on the causal
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Studies in Rheumatic Diseases ... has higher specificity ... test but lower sensitivity ... more time for the laboratory ... Rheumatoid #Arthritis #laboratory
Antibiotic Susceptibility Testing Methods
1) Kirby Bauer Disk Diffusion: disks impregnanted w/ Abx → circular gradient →
Susceptibility Testing ... concentrations + algorithms ... MIC Infectious Diseases ... #Antibiotic #Sensitivity ... #laboratory #microbiology
Celiac Disease - Diagnosis Algorithm
IgA TTG has high sensitivity and specificity of ~ 98% and is
Celiac Disease - ... Diagnosis Algorithm ... IgA TTG has high sensitivity ... and specificity ... pts need further testing