10 results
Cholecystitis Diagnostic Test Characteristics  

Sensitivity, Specificity and Likelihood Ratios of Labs, Physical Exam findings, and
Cholecystitis Diagnostic Test ... Characteristics Sensitivity ... Cholecystitis #Testing ... Characteristics #Table ... LikelihoodRatio #Accuracy
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
and first-level screening ... test - High sensitivity ... Celiac #Disease #Testing ... #Laboratory #Tests ... Diagnosis #Workup #Table
Iron Deficiency Anemia vs Anemia of Chronic Disease - Laboratory Testing

SUMMARY:
 - RDW, FEP, serum iron,
Chronic Disease - Laboratory ... Testing SUMMARY ... normal but poor sensitivity ... Ferritin-best non-invasive test ... #Table #Fe
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
but lower sensitivity ... more time for the laboratory ... Screening Tests ... Screening Tests ... Rheumatoid #Arthritis #laboratory
Performance Characteristics for Colorectal Cancer Screening Tests
Stool/blood-based tests:
 • FIT: 79% sensitivity, 94% specificity for CRC
Colorectal Cancer Screening ... tests: • FIT: ... Cancer #colon #Screening ... #table #management ... gastroenterology #CRC #Testing
ACA Colorectal Cancer Screening Guidelines

When to Screen?
When to Stop?
Family History

Performance Characteristics for Colorectal Cancer Screening Tests
Stool/blood-based
Colorectal Cancer Screening ... Colorectal Cancer Screening ... Cancer #colon #Screening ... #comparison #table ... gastroenterology #CRC #Testing
Helicobacter Pylori Testing  Methods - Sensitivity and Specificity

Serology - 85% - 79% - Does not
Methods - Sensitivity ... Urea breath test ... BEST first line test ... #Laboratory #Diagnosis ... #Accuracy
Diagnosis Adrenal Insufficiency - Algorithm

Step 1) Screening Test: 6-8AM Cortisol Level
 - Early morning cortisol levels
Insufficiency - Algorithm ... Step 1) Screening ... for AI (but low sensitivity ... require Cosyntropin testing ... Insufficiency #Algorithm
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Sensitivity (rule ... out – screening ... PPV Higher sensitivity ... probability of getting ... error Validity (“accuracy
Antibiotic Susceptibility Testing Methods
1) Kirby Bauer Disk Diffusion: disks impregnanted w/ Abx → circular gradient →
Susceptibility Testing ... Gradient diffusion (E test ... concentrations + algorithms ... #Antibiotic #Sensitivity ... #laboratory #microbiology