13 results
Test Characteristics of Physical Exam, Imaging, and LRINEC 
Score for the Identification of Necrotizing Fasciitis (Sensitivity,
Test Characteristics ... , Specificity %) ... Fasciitis #LRINEC #Testing ... #Accuracy #PhysicalExam ... #Sensitivity #Specifiity
Tuberculous Pleural Effusions - Tests and Biomarkers
Age + fever + red blood cells + ADA -
Pleural Effusions - Tests ... and specificity ... amplification test ... #Tuberculosis #Laboratory ... #Testing #diagnosis
Cholecystitis Diagnostic Test Characteristics  

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

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
Used Diagnostic Tests ... reliable noninvasive test ... first-level screening test ... Celiac #Disease #Testing ... #Laboratory #Tests
Acute Mesenteric Ischemia - Performance of 
Laboratory Tests (Sensitivity, Specificity) 
- WBC, Lactate, D-dimer, Urine I-FABP

#Mesenteric
Performance of Laboratory ... Tests (Sensitivity ... , Specificity) ... Ischemia #AMI #Testing ... #Sensitivity #Specificity
Helicobacter Pylori Testing  Methods - Sensitivity and Specificity

Serology - 85% - 79% - Does not
Methods - Sensitivity ... and Specificity ... Urea breath test ... first line test ... #Accuracy
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
antibody (ANA) test ... ; if positive, test ... has higher specificity ... but lower sensitivity ... including liver function
Diagnosis Adrenal Insufficiency - Algorithm

Step 1) Screening Test: 6-8AM Cortisol Level
 - Early morning cortisol levels
Step 1) Screening Test ... have almost 100% specificity ... for AI (but low sensitivity ... ) Confirmation Test ... This test determines
Summary of Available Tests for Clostridium difficile Infection, in Decreasing Order of Sensitivity
 • Toxigenic culture
Summary of Available Tests ... amplification tests ... difficile #CDiff #laboratory ... #diagnosis #testing ... #sensitvity #specificity
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
disease who test ... then all negative tests ... without disease who test ... then all positive tests ... reproducibility of test