12 results
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
false positive tests ... #DrugScreens #UDS ... Toxicology #Diagnosis #FalsePositive ... #Testing
Agents Causing Potential False-Positive Results With Urine Drug Screening 

#Urine #DrugScreens #UDS #Laboratory #Toxicology #Diagnosis #FalsePositive
#DrugScreens #UDS ... Toxicology #Diagnosis #FalsePositive ... #Testing
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix

Sensitivity refers to the test's ability to correctly
False-Negative Contingency Table ... Specificity of a test ... disease, who will test ... #Specificity #FalsePositive ... #Contingency #Table
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Fecal Occult Blood Test ... #OccultBlood #Testing ... #Laboratory #FalsePositive ... #Differential #Accuracy
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
Fecal Occult Blood Testing ... immunochemical test ... to unnecessary testing ... #OccultBlood #Testing ... #FOBT #Guaiac #FalsePositives
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Drug Screens (UDS ... naproxen and modern tests ... #FalsePositives ... DrugScreening #UDS ... #Testing #Laboratory
Cholecystitis Diagnostic Test Characteristics  

Sensitivity, Specificity and Likelihood Ratios of Labs, Physical Exam findings, and
Cholecystitis Diagnostic Test ... Cholecystitis #Testing ... Characteristics #Table ... LikelihoodRatio #Accuracy
Abnormal liver function tests algorithm.
 This figure details the initial response to abnormal liver blood tests.
algorithm. ... decision for repeat testing ... *Abnormal USS may ... diabetes mellitus; USS ... LFTs #Abnormal #Algorithm
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 ... not available in US ... the use of this test ... Galactomannan #Fungal #Testing ... #FalsePositives
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
event, follow ACC algorithm ... determine if stress test ... Stable patients ... surgery Stress Testing ... preoperative stress testing