29 results
Agents Causing Potential False-Positive Results With Urine Drug Screening 

#Urine #DrugScreens #UDS #Laboratory #Toxicology #Diagnosis #FalsePositive
False-Positive Results With Urine ... Screening #Urine ... Toxicology #Diagnosis #FalsePositive ... #Testing
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
Urine Drug Screens ... Diphenhydramine #Urine ... Toxicology #Diagnosis #FalsePositive ... #Testing
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix

Sensitivity refers to the test's ability to correctly
Sensitivity Specificity ... confusion matrix Sensitivity ... #Sensitivity #Specificity ... #FalsePositive
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
False Positives on Urine ... #FalsePositives ... #Urine #DrugScreening ... #UDS #Testing #
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
Fecal Occult Blood Testing ... the ambulatory setting ... to unnecessary testing ... #OccultBlood #Testing ... #FOBT #Guaiac #FalsePositives
Diagnostic algorithm for the workup of hypercalcemia. The diagnostic workup for patients presenting with hypercalcemia rests
Diagnostic algorithm ... Urine calcium-creatinine ... from a 24-hour urine ... value of 0.0115, sensitivity ... Thus, further testing
Cushing Syndrome Testing Algorithm
INDICATIONS FOR TESTING:
 • Suspected Cushing syndrome (central obesity, muscle weakness, refractory hypertension)
Testing:
Algorithm INDICATIONS ... FOR TESTING: • ... Cortisol, Free Urine ... Serum (or Cortisol Urine ... Syndrome #diagnosis #algorithm
Step by Step Algorithmic Approach to Pediatric Fever

Age < 21 days old (or 28 days for
Step by Step Algorithmic ... days for improved sensitivity ... Leukocytes in the urine ... Management #StepByStep #Algorithm
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Differential Diagnosis Algorithm ... present on repeat testing ... including overnight testing ... Proteinuria (Negative urine ... Differential #Diagnosis #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 ... Sensitivity Specificity ... Galactomannan #Fungal #Testing ... #FalsePositives ... #Laboratory #sensitivity