25 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
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
Fecal Occult Blood Testing ... immunochemical test ... Does not change management ... to unnecessary 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
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
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
ISCHEMIA Trial - Management Algorithm for patients with Stable Angina

Stress Test -> ? +moderate or severe
ISCHEMIA Trial - Management ... Algorithm for patients ... Stress Test ... evaluation or management ... #Algorithm #Cardiology
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Diarrhea Workup and Management ... Algorithm in Transplant ... Breath test for ... Diarrhea #Workup #Management ... #Algorithm #Transplant