43 results
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix

Sensitivity refers to the test's ability to correctly
False-Negative Contingency ... Specificity of a test ... disease, who will test ... #Specificity #FalsePositive ... FalseNegative #Contingency
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
Blood Testing (FOBT ... immunochemical test ... of time) Why FOBT ... OccultBlood #Testing #FOBT ... #Guaiac #FalsePositives
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Fecal Occult Blood Test ... False Positive gFOBT ... medication #Guaiac #FOBT ... Testing #Laboratory #FalsePositive
Diabetic Foot Guidelines: Test patients w diabetes for peripheral neuropathy using the Semmes-Weinstein test
JAMA. 2017;318(14):1387-1388. doi:10.1001/jama.2017.11700

#Diagnosis
Diabetic Foot Guidelines ... : Test patients ... Semmes-Weinstein test
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
false positive tests ... Toxicology #Diagnosis #FalsePositive
Abnormal Simmonds-Thompson Test (Positive) for Achilles Tendon Rupture

In this positive Simmonds-Thompson test, there is no plantar
Simmonds-Thompson Test ... Simmonds-Thompson test ... flexion of the foot ... Simmonds #Thompson #Test
Normal Simmonds-Thompson Test (Negative) for Achilles Tendon Rupture

In this normal Simmonds-Thompson test, plantar flexion of the
Simmonds-Thompson Test ... Simmonds-Thompson test ... flexion of the foot ... Simmonds #Thompson #Test
In a patient in the supine position, raising the leg with the knee extended stretches the
A positive test ... dorsiflexion of the foot ... (Fajersztajn’s test ... in a positive test ... This test is 90%
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
naproxen and modern tests ... #FalsePositives
Posteromedial Instability on Knee Exam
This is what a knee with posteromedial instability looks like. Notice the
anterior drawer test ... w/the foot in external